KSEEB MODEL QUESTION PAPER 1,2,3,4, Pre Exam - 1, 2 - 2025-26 CHAPTERWISE

 

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KSEEB MODEL QUESTION PAPER 1,2,3,4, Pre Exam - 1, 2 - 2025-26 CHAPTERWISE - BIOLOGY

       BIOLOGY     

    LIFE PROCESESS     

     MULTIPLE CHOICE QUESTIONS

1. An enzyme that secretes by the pancreas to digest protein is (MQP –1)

(A) amylase    (B) pepsin 

(C) trypsin      (D) lipase

2. The correct statement regarding bile juice among the following is, this juice is secreted by the (MQP –2)

(A) stomach and acidifies food. 

(B) stomach and alkalises food.

(C) liver and alkalises food. 

(D) pancreas and alkalises food.

3. The function of stomata among the following is (MQP –3)

(A) Exchange of gases

(B) Transportation of water and food

(C) Preparation of food

(D) Establishing osmotic pressure

4. An incorrect statement related to the transpiration among the following is; this process (Preparatory-1)

(A) Creates osmotic pressure for the movement of food molecules

(B) Helps in the absorption and movement of salts from the roots

(C) Creates suction force for the movement of water molecules

(D) Balances water level in a plant body

5. A person runs immediately after seeing a snake, later experiences cramps in his leg muscles. Because, in the muscles (Preparatory – 2)

(A) carbon dioxide and ethanol will form 

(B) pyruvate converts into lactic acid

(C) glucose is converted to pyruvate 

(D) amount of oxygen increases

     ONE MARK QUESTIONS

1. What is the importance of xylem tissue in plants? (MQP –1)

2. What is the relationship between the amount of haemoglobin in the blood and the amount of ATP released in the human body? (MQP –2)

3. Double circulation of the blood is essential to maintain constant temperature in mammals.

How? (MQP –3)

4. The respiration rate of aquatic animals is faster than that is found in terrestrial animals.

Why? (MQP –4)

5. Draw the diagram to show the structure of open stomata. (Preparatory – 1)

6. What is Photosynthesis ? (Preparatory – 2)

7. What is the importance of transpiration in plants ? (Preparatory – 2)

      TWO MARKS QUESTIONS

1. Name the following.

(i) Structures that prevent the collapsing of air-passage part of trachea in the humans.

(ii) Nitrogenous chemicals that are separated from the blood by the kidney. (MQP –1)

OR

a) In which form the excess glucose is stored in plants and animals?

b) Name the structures of the humans small intestine that absorb digested food.

2. Draw a diagram showing the structure of a nephron. Label glomerulus. (MQP –2)

3. Draw the diagram to show the structure the structure of the nephron and label the part Bowman’s capsule. (MQP –3)

4. The approximate lengths of the small intestine of the animals A and B are given in the below table. Observe the data in the table and answer the question. (MQP –4)

Identify the herbivorous and carnivorous animal among A and B. Support your conclusion.

5. What are the differences between arteries and veins? (Preparatory – 1)

OR

Write the differences between aerobic respiration and anaerobic respiration.

6. Name the enzyme present in saliva. Write its function. (Preparatory – 2)

OR

Name the following:

i) Structures that prevent the collapsing of air passage part of trachea in the human.

ii) Nitrogenous chemicals that are separated from the blood by the kidney.

      FOUR MARKS QUESTIONS

1. Draw a diagram showing the schematic sectional view of the human heart. Label the following parts.

(i) Septum (ii) Right atrium (MQP –1)

2. a) What are the functions of the aorta and pulmonary veins? (MQP –2)

b) State the events that occur during the photosynthesis in plants.

OR

a) In the first stage of cellular respiration, the glucose molecule is broken down into which molecule in the cytoplasm? How is this broken molecule breaks down in muscle cells?

b) Write any two differences between xylem and phloem.

3. a) How are inorganic substances transported from the xylem tissue in plants? Explain. 

b) Write any four methods used by plants to eliminate waste materials. (MQP –3)

OR

a) Explain the digestion process in the small intestine of humans.

b) What is the main function of alveoli in the human lungs? 

4. Draw the diagram showing the structure of the human heart. Label the following parts: 

i) Superior vena cava ii) Left ventricle (MQP –4)

5. a) What t is emulsification of fats?

b) Write the events that occur during photosynthesis in plants.

6. Draw the diagram showing the schematic structure of the human heart. (Preparatory – 2)

Label the following parts: i) Septum i) Right atrium

     CONTROL AND COORDINATION

     MULTIPLE CHOICE QUESTIONS

1. Observe the figure given below. The name of the part ‘X’ and its function is (MQP –1)

(A) Neuron; transmits chemicals as electrical impulses

(B) synapse; transmits electrical signals generated at the axon terminal to the dendrite

(C) Neuron; transmits electrical impulses as chemicals

(D) synapse; transmits chemical signals generated at the axon terminal to the dendrite

2. The plant hormone responsible for phototropism in plants is (MQP –3)

(A) Auxin                         (B) Cytokinin 

(C) Abscisic acid            (D) Gibberellin

      ONE MARK QUESTIONS

1. Why does the stem of a growing plant bend towards the light? Explain. (MQP –1)

OR

Write any two differences between central nervous system and peripheral nervous system.

2. What is the function of abscisic acid in plants? (MQP –3)

3. What is the function of synapse? (MQP –4)

4. Observe the tropisms of plants expressed in the following figures A and B. What is the difference between the movements of these plants? (Preparatory-1)

      TWO MARKS QUESTIONS

1. a) Name the prominent parts of reflex arc. (MQP –2)

b) Which hormones are responsible for sexual maturation in humans?

2. What is reflex arc? In many animal’s reflex arcs have been found an effective way of functioning. Why? (MQP –3)

3. What is geotropism? Name the plant part that is positively geotropic. (MQP –4)

OR

Name the hormones that perform the following functions in humans.

i) Controlling the level of sugar in the blood.

ii) Preparing the body to face the emergency situation.

5. We pull out our foot back when we step on a thorn without realizing. Write the sequence of the events that occur in this process. (Preparatory-1)

6. What is geotropism? Name the plant part that is positively geotropic. (Preparatory-2)

      THREE MARKS QUESTIONS

1. Name the hormones that perform the following functions in humans. (MQP –1)

(i) Controlling the sugar level in the blood.

(ii) Prepare the body to deal with emergency situations.

(iii) Controlling the fats, proteins and carbohydrates metabolism.

2. Draw the diagram showing the structure of human brain. Label the following parts. 

(i) Cerebrum (ii) Pons (MQP –2)

3. Draw the diagrams to show the structure of human brain. Label the following parts 

i) Hypothalamus ii) Pons (MQP –3)

4. In a situation where we withdraw our leg when stepped on thorn unknowingly, (MQP –4)

i) Write the sequences of events that occur to give the response in this situation.

ii) Which part of human nervous system controls this action?

5. Draw the diagram to show the structure of human brain and label the following parts : i) Cerebrum ii)

Hypothalamus. (Preparatory-1)

6. a) Heartbeat becomes faster at the time of anxiety. How does the body prepare to deal this situation ? Explain. (Preparatory-2)

b) Experiencing taste and watering in the mouth automatically occurs by the memory of the food taste. Are both of these responses same ? Justify your answer.

    HOW DO ORGANISMS REPRODUCE

      MULTIPLE CHOICE QUESTIONS

1. Observe the figure below. The characteristic and function of the structure ‘X’ are respectively (MQP –2)

(A) wall is absent and pollinates.

(B) it has a thick wall and grows into a new rhizopus.

(C) it has a thin wall and grows into a new rhizopus.

(D) it has a thick wall and pollinates.

2. A common bacterial infection that spreads through sexual contact in human beings is (MQP –3)

(A) Gonorrhoea     (B) AIDS 

(C) Hepatitis B       (D) Warts

3. The process of producing new individuals in rhizopus is (MQP –4)

(A) spore formation 

(B) fragmentation 

(C) budding 

(D) regeneration

4. Part of flower that develops into fruit and part of the seed that develops into root respectively are (MQP –4)

(A) Ovary and Plumule 

(B) Plumule and radicle 

(C) Ovary and radicle 

(D) Ovary and ovule

5. Organisms that reproduce sexually are more likely to survive in their environment. Because in sexual reproduction these organisms, (MQP –4)

(A) do not produce any variations.

(B) will not have any errors during DNA replication.

(C) will have the same body structure in all generations.

(D) will have the maximum number of successful variations in the subsequent generations.

6. The process of producing the new progenies in rhizopus is (Preparatory – 1)

(A) spore formation 

(B) vegetative propagation 

(C) binary fission 

(D) regeneration

7. the sequential stages that occur in the sexual reproduction of flowering plants are (Preparatory – 1)

(A) pollination, fertilization, seed, embryo 

(B) seed, embryo, fertilization, pollination

(C) embryo, seed, pollination, fertilization 

(D) pollination, fertilization, embryo, seed

8. The embryo gets nutrition from the mother's blood with the help of special structure called (Preparatory – 2)

(A) Fallopian tube    (B) Ovary 

(C) Uterus                 (D) Placenta 

       ONE MARK QUESTIONS

1. How is the binary fission in amoeba differs from budding in hydra? (MQP –1)

2. “Is Self-pollination possible in flowers that have only stamens?” Justify your answer. (MQP –3)

3. Is self-pollination possible in flowers that have only stamens? Justify your answer. (MQP –4)

4. A scientist cuts planaria as shown in the figure below. After regeneration how many planaria will remain here? (Preparatory – 2)

     FIVE MARKS QUESTIONS

1. a) List the three methods of contraception that are usually followed by human beings.

b) What is the function of the vas deferens and prostate gland in the human male reproductive system?

c) How does the menstrual cycle occur? Explain. (MQP –1)

OR

a) Write any two differences between self and cross pollination.

b) What are the changes that occur in a flower after fertilization?

c) Mention any four advantages of vegetative propagation.

2. a) What is the role of the placenta at the development stage of the embryo in the female uterus?

b) Testes are located outside the abdominal cavity in males. Why? (MQP –2)

c) How is the number of chromosomes reestablished in sexual reproduction? Explain.

OR

a) How are the reproductive processes in hydra and planaria differ?

b) What are the changes that occur in the flower after fertilization?

c) How does a seed grows into future plant?

3. a) How do daughter organisms produced in hydra, spirogyra and amoeba? Explain briefly. (MQP –3)

b) What are the changes that occur in a flower after fertilization?

OR

a) How does a fertilized egg in a female develop into an embryo in the uterus?

How does this embryo get nourishment in the mother’s womb? Explain

b) Explain the important functions of

i) Testis and

ii) Seminal vesicle in male reproductive system in humans.

4. a) What happens if egg does not fertilize in human female reproductive system? Explain briefly.

b) List any four advantages of vegetative propagation. (MQP –4)

c) Write two examples for the organisms that reproduce by binary fission.

OR

a) In women, how does a fertilized egg develop into an embryo in the uterus?

b) Is surgical contraception a better method of contraception than physical contraception? Justify your answer.

c) Write the function of testes in human male reproductive system.

5. a) Explain the process of development of an egg into a foetus in human female reproductive system

b) What are sexually transmitted diseases? Write any two examples. (Preparatory-1)

OR

a) What is asexual reproduction? What are the differences between fragmentation and fission?

b) Mention the advantages of vegetative propagation

6. a) What is the function of the vas deferens and prostate gland in the male reproductive system ? How does the menstrual cycle occur in women ? (Preparatory-2)

b) List the three methods of contraception that human beings usually follow.

OR

a) What is the difference between self and cross pollination ? What are the changes that occur in a flower after fertilization ?

b) Mention any four advantages of vegetative propagation.

    HEREDITY  

     MULTIPLE CHOICE QUESTIONS

1. In a zygote there are 24 pairs of chromosomes. Then the number of chromosomes present in the gametes are (MQP –1)

(A) 24 pairs     (B) 48 

(C) 6 pairs       (D) 24

2. The correct statement/s about gene among the following is/are (MQP –2)

(i) It is an unit of DNA.

(ii) It is the source of information for protein.

(iii) A single gene synthesizes several proteins.

(iv) It functions as an enzyme.

(A) (i) only

(B) (i) and (ii) only

(C) (ii), (iii) and (iv) only

(D) (i), (ii) and (iii) only

3. The generation in which Mendel performed cross pollination is (Preparatory-2)

(A) Parent       (B) Ovary 

(C) F2              (D) F3

      ONE MARK QUESTIONS

1. Observe the table below showing different forms of pea plants. (MQP –1)

Write the indicator of the trait having green seeds and flowers at the top of the stem.

2. What is DNA replication? (MQP –2)

3. What is DNA replication? (MQP –3)

4. How is the sex of a male child determined in humans? (Preparatory-1)

       THREE MARKS QUESTIONS

1. Explain: (MQP –1)

a) The determination of the height of a plant by genes.

b) The determination of the sex of the male child in humans.

OR

A red flowering pea plant (RR) is crossed with a white flowering pea plant (rr). Show the result of F2 generation with the help of a checker board. Write the phenotypic ratio and the genotypic ratio of the plants obtained in F2 generation.

2. Red flowering tall pea plant (TTRR) is hybridised with white flowering dwarf pea plant (ttrr). Show the result of F2 generation with the help of a checker board and write the ratio of verities of plants. (MQP –2)

OR

Yellow seeds producing pea plant (YY) is hybridised with green seeds producing pea plant (yy). Show the result of F2 generation with the help of a checker board. Write the phenotypic and genotypic ratios of F2 generation.

3. a) Father only determines the sex of a child. Why? (MQP –3)

b) Yellow seed producing pea plant (YY) is crossed with green seed producing plant (yy). Then draw a checker board showing the results obtained in F2 generation.

(OR)

Red flowering tall pea plant (TTRR) is hybridised with white flowering short pea plant (ttrr). Then draw a checker board showing the results obtained in F2 generation.

4. a) A short pea plant (tt) is crossed with a tall pea plant (TT). Express the result obtained in the F2 generation with the help of checkerboard. (MQP –4)

b) How is the baby girl sex will be determined?

OR

Round and yellow seeds (RrYy) producing pea plants are self-pollinated. Express the result obtained in this crossing with the help of a checkerboard. Mention the types of the plants obtained.

5. A pure tall pea plant ( TT ) is crossed with a pure dwarf pea plant ( tt ). Express the result obtained in F2 generation with the help of checker board and mention the ratio of the types of plants. (Preparatory-1)

6. Explain the role of chromosomes of father and mother in the determination of the sex of a child. (Preparatory-2)

OR

A pure tall pea plant (TT) is crossed with a pure short pea plant (tt). Express the result obtained in the F generation with the help of checker board. Write the phenotypic and genotypic ratio of the types of plants obtained in F2 generation. 

     OUR ENVIRONMENT  

      THREE MARKS QUESTIONS

1. a) Ozone layer is a boon to the life on the earth. Justify. (MQP –1)

b) The organisms of which trophic level in a food chain are most affected by biological magnification? Why?

2. a) What are biodegradable substances? (MQP –2)

b) Which synthetic chemical is responsible for the depletion of the ozone layer?

c) Write two examples of decomposers.

3. a) Grass → Frog → Snake; If the amount of energy in the first trophic level of this food chain is about 100 J, What is the amount of the energy available for the organism at the third trophic level?

b) If all the wastes we generate are biodegradable, what kind of the effects this would impact on our environment? Discuss. (MQP –3)

4. a) Define the following: (MQP –4)

i) Food chain ii) Biomagnification

b) Mention the function of ozone. Name the chemical responsible for ozone depletion.

5. grass → Grasshopper → Frog → Snake : In this food chain. (Preparatory-1)

i) Which organism has more deposition of harmful chemicals?

ii) Does the energy from the frog return to the grass-hopper? Clarify your answer.

OR

Give reasons :

a) Production of CFC free refrigerators is compulsory.

b) Plastics remain for long period in the environment.

6. a) Define the following: (Preparatory-2)

i) Food chain ii) Biomagnification.

b) Mention the function of ozone layer in the atmosphere. Name the chemical responsible for ozone depletion.

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KSEEB MODEL QUESTION PAPER 1,2,3,4, Pre Exam - 1, 2 - 2025-26 CHAPTERWISE - PHYSICS

    PHYSICS    

   ELECTRICITY   

    MULTIPLE CHOICE QUESTIONS

1. The S I unit of potential difference is (MQP –1)

(A) volt (V)             (B) ampere (A) 

(C) coulomb (C)    (D) ohm meter (Ωm)

2. The S I unit of electric current is (MQP –2)

(A) ampere (A)    (B) ohm (Ω) 

(C) volt (V)           (D) watt (W)

3. The rate of energy consumed in an electrical circuit is, electric (MQP –3)

(A) current 

(B) potential difference 

(C) resistance 

(D) power

4. When three resistors of different resistance are connected in parallel in an electric circuit and switched on, then the quantity that remains the same in all the resistors is (MQP –4)

(A) current 

(B) potential difference 

(C) resistance 

(D) resistivity

5. The SI unit of potential difference (preparatory – 1)

(A) volt             (B) Ampere 

(C) coulomb    (D) ohm metre

6. The SI unit of resistivity is (preparatory – 2)

(A) ohm-metre     (B) coulomb 

C) volt                    (D) joule

     ONE MARK QUESTIONS

1. Write the symbols of the following components used in the electric circuit. (MQP –1)

(i) Dry cell  (ii)Rheostat

2. Draw the symbols of the following components used in an electrical circuit. (MQP –3)

i) Rheostat ii) Wires crossing without joining

3. Write the diagrams of the symbols of the following components used in an electric circuit:

i) Rheostat or variable resistance (preparatory – 1)

ii) Wire crossing without joining.

4. Mention the role of fuse in the domestic circuit. (preparatory – 2)

     TWO MARKS QUESTIONS

1. Mention the factors on which resistance of a conductor depend. (MQP –1)

2. Draw a simple electric circuit. Label ammeter and voltmeter (MQP –2)

3. An electric motor receives 10A electric current from 220V electric source. Find the power of

Motor (MQP –2)

4. How does the resistance of a conductor related to the length of the conductor and the area of cross-section of that conductor? (MQP –3)

OR

The resistivity of some materials found at 20o C is given in the table below. Look at it and answer the questions given below

a) Which is the better conductor among silver and copper? Why?

b) Alloys are used in electric heating devices. Why?

5. Among nichrome and copper wires, which of the wires is used in electric fan and in the coils of electric heater? Why? (MQP –4)

6. Observe the given diagram and calculate the total resistance in the given electric circuit.(Preparatory – 1)

7. If the total resistance in the given circuit is 4Ω then find the resistance of the resistor X.(Preparatory – 2)

     FOUR MARKS QUESTIONS

1. a) Observe the below table. Which of the below listed electrical appliances consumes more energy?  (MQP –1)

b) 2 Ω and 4 Ω resistors are connected in parallel. If 6 Ω resistor is used in place of 4 Ω, then find the difference between the difference between the total resistance obtained in both of these arrangements.

OR

a) A 350W bread toaster is used 6 hours a day. A 250W iron box is used 4 hours a day. If these appliances are used for 30 days, then calculate the total cost of the energy consumption at the rate of Rs. 4 for 1kWh.

b) A fan having the power 880W is connected to a source of potential difference 220V in an electric circuit. Calculate the electric current and the electric resistance of this circuit.

2. a) State Joule’s law of heating and name four appliances which work on the heating effect of electricity.

b) Give reason. (MQP –2)

(i) The tungsten is used almost exclusively for filament of electric lamps.

(ii) Copper and aluminium wires are usually employed for electricity transmission.

OR

a) State ohm’s law. List the factors on which the resistance of conductor depends.

b) “The potential difference between two points is 1V.” Mention the meaning of this statement.

3. a) Observe the diagram of below given electric circuit. Find the total resistance and the total current of the circuit. (MQP –3)

b) An electric fan rated 50 W is used for 6 hours in a day. What is the cost of the energy it consumes for 30 days at Rs.4 per 1kWh?

4. a) Two resistors of resistance 10Ω and 40Ω are connected in series and connected to a 12V battery. Calculate the equivalent resistance in the electric circuit and the total current flowing in the circuit.

b) A washing machine rated 500W is used for 2 hours a day for 30 days. Calculate the cost of using this appliance at 3 Rs per 1 kWh. (MQP –4)

OR

a) Resistance of a metal wire of length 2 m is 28 Ω at 20°C. If the diameter of the wire is 0.04 mm then, what will be the resistivity of the metal at that temperature?

b) 1000 J of heat is produced each 2 seconds in a 5Ω resistor. Find the potential difference across the resistor.

5. a) List the factors on which the resistance of a conductor depends. (Preparatory – 1)

b) Write the mathematical form of Joule’s law of heating. Name any two devices that work on the basis of Joule’s law of heating.

6. a) State Ohm's law. List the factors on which the resistance of the conductor depends. (Preparatory – 2)

b) "The potential difference between two points of a conducting wire is 1 V." Write the meaning of this statement.

   MAGNETEIC EFFECTS OF ELECTRIC CURRENT

    MULTIPLE CHOICE QUESTIONS

1. Observe the figure given below. The magnetic field at the centre ‘C’ of circular coil is (MQP –2)

(A) zero   (B) I    (C) 2I1    (D) 2I2

2. Correct statement with respect to magnetic field in the given diagram is, (Preparatory – 1)

(C → Current-carrying solenoid, P and Q → Points inside the solenoid,R→ Point outside the solenoid)

The magnetic field

(A) in P is more than in Q

(B) in Q is more than in P

(C) in R is more than in P and in O

(D) in P and in Q is equal.

     ONE MARK QUESTIONS

1. Observe the below figure. When switch is closed, does the B end of the solenoid attract the N end of the bar magnet? Clarify the answer (MQP –1)

2. List any two suggestions to avoid the overload in domestic electric circuit. (MQP –2)

3. What happens if the fuse is connected to the neutral wire instead of connecting to the live wire in the meter board of the house? (MQP –3)

4. What are the reasons for overload in an electric circuit?

5. Two situations of freely suspended parallel copper wires carrying current are shown in the figure given below. (MQP –4)

In which of these situations, the wires attract each other? Justify your answer

6. What does the thumb indicate in the right-hand thumb rule? (Preparatory – 2)

     TWO MARKS QUESTIONS

1. What precautionary measures have to be taken to avoid overload in domestic circuit? (MQP –1)

2. One end of the bar magnet is brought near the south pole of a magnetic needle. Then this end of the magnetic needle deflects away from the end of the bar magnet. Name the pole of the bar magnet that has been directed towards the south pole of this magnetic needle. Give reason for your answer. (MQP –3)

3. Draw the diagram indicating the field lines of the magnetic field around a current-carrying straight conductor. (MQP –4)

4. Mention any four properties of magnetic field lines. (Preparatory – 1)

OR

What precautionary measures have to be taken to avoid overload in domestic electric circuit?

5. Write any two methods of increasing the magnetic field produced by a circular coil carrying electric current. (Preparatory – 2)

      THREE MARKS QUESTIONS

1. Explain an activity of obtaining magnetic field lines around a bar magnet using a compass needle.

OR

Explain experiment that shows ‘a current carrying conductor when kept in the magnetic field experiences a mechanical force. (MQP –1)

2. a) What is solenoid? (MQP –2)

b) State Fleming’s left hand rule.

c) What is the potential difference between live wire and neutral wire in domestic electric circuit in our country?

3. a) What are the reasons for overloading in an electric circuit? (MQP –3)

b) What is solenoid? How can electromagnet be prepared from a solenoid?

OR

a) Mention the properties of magnetic field lines.

b) When the number of turns of a current carrying circular loop is increased by ten times what change occurs in the magnetic field produced in it?

4. Explain an experiment to demonstrate that a current carrying conductor placed in a magnetic field experiences a force. (MQP –4)

OR

Explain an activity to draw the magnetic field lines around a bar magnet using a compass needle.

5. Explain the activity of drawing magnetic field lines around a bar magnet using a compass needle. (Preparatory – 1)

6. A transparent glass sheet is placed over a bar magnet. Iron filings sprinkled over the glass sheet. The glass sheet is given a gentle tap and following observations are made. (Preparatory – 2)

a) Iron filings form non-parallel curved lines.

b) Iron filings are closely packed near the poles.

c) As moved away from the bar magnet, the distribution of the iron filings become rarer. Which property of the bar magnet does each of the above observations indicate?

OR

The given diagram represents the experiment conducted to observe the deviation of a beam of electrons when the beam enters the magnetic field perpendicularly. If the beam deviates in the direction out of the surface of the paper then

i) predict the pole of the magnet indicated as A

ii) state the principle that helps this prediction.

    LIGHT – REFLECTION AND REFRACTION

     MULTIPLE CHOICE QUESTIONS

1. The reciprocal of focal length of lens is (MQP –1)

(A) the power of lens

(B) the radius of curvature of lens

(C) equal to the sum of object distance and image distance

(D) equal to the difference between the object distance and image distance

2. A mirror produces erect and enlarged image of an object. Then the type of mirror and the nature of that image is respectively (MQP –3)

(A) Convex mirror and virtual image

(B) concave mirror and real image

(C) Convex mirror and real image

(D) Concave mirror and virtual image

3. The diameter of the reflecting surface of a spherical mirror is (MQP –4)

(A) pole of the mirror 

(B) centre of curvature 

(C) principal axis 

(D) aperture

4. The distance between principal focus and the optic centre of the lens is (Preparatory - 2)

(A) Radius of curvature 

(B) Object distance 

(C) Focal length 

(D) Image distance

      ONE MARK QUESTIONS

1. Which mirror is used as rear view mirror? (MQP –2)

2. In the given diagram, which angle is bigger among the angles r1, and r2? Give a reason. (Preparatory - 1)

     THREE MARKS QUESTIONS

1. Draw a ray diagram to show the image formation when an object is kept beyond ‘C’ in front of a concave mirror. Mention the nature and position of the image formed. [C: Centre of curvature of mirror]  (MQP –1)

2. a) State two laws of reflection of light. (MQP –2)

b) What is magnification of mirror? What does the negative sign indicate in the magnification value?

OR

Explain the activity which shows the refraction of light through a glass slab.

3. Draw the diagram to show the image formation when an object is placed between 2F1 and F1 of a convex lens. Mention the position and size of the image formed. (F1 -principal focus of lens) (MQP –3) 

4. Draw the ray diagram to show the image formation when an object is kept between ‘C’ and ‘F’ of a concave mirror. Write the nature and size of the image formed. [C = Centre of curvature, F = Principal Focus] (MQP –4)

5. Draw the ray diagram for the image formation when an object is placed between 2F1 and F1 of a convex lens. Mention the nature of the image formed. [ F1 : Principal focus of the lens. ](Preparatory – 1)

6. Draw the ray diagram of the image formed when an object is placed at F1 in front of a convex lens. Mention the position and size of the image. (Preparatory – 1)

     FOUR MARKS QUESTIONS

1. a) State the laws of refraction of light. (MQP –1)

b) Mention any two differences between convex mirror and convex lens.

2. a) An object is placed perpendicular to principal axis of a convex lens of focal length 20cm. If the distance of image is to be 60cm, then at what distance the object is to be placed from the lens?

b) The object distance and image distance of a lens are -30cm and -10 cm respectively. Decide the type of lens and nature of image. (MQP –2)

3. a) What is reflection of light? (MQP –3)

b) State the laws of reflection of light.

c) What is the focal length of a mirror?

OR

a) What is refraction of light?

b) State Snell’s law of refraction.

c) Define the following with respect to a lens. i) Focal point ii) Aperture

4. a) What is magnification? Write the formula to calculate magnification of the image produced by a lens.

b) State the laws of reflection of light. (MQP –4)

5. a) What is magnification? If the magnification of an image produced by a lens is + 2, then mention the type of the lens. b) The refractive index of medium A is less than that of medium B. Which of these media is optically denser? In which of these media the speed of light is more? (Preparatory – 1)

OR

a) What is centre of curvature of a spherical mirror ? Write any two uses of concave mirror.

b) State the laws of refraction of light.

6. a) What is magnification? If the magnification of the image produced by a lens is + 2, then mention the type of the lens. b) Refractive index of medium A is lesser than the refractive index of medium B. Which of these two media is optically denser ? In which medium speed of light is more? (Preparatory – 2)

OR

a) State two laws of reflection of light.

b) Write any two differences between concave mirror and convex mirror.

    HUMAN EYE AND COLOURFUL WORLD 

     TWO MARKS QUESTIONS

1. Observe the figure given below. Name the angle of deviation and identify its value. (MQP –1)

2. Draw a diagram of experiment conducted by Newton to show the recombination of white light. (MQP –2)

3. Define the phenomenon expressed in below given figure. Which colour does H and M represent here? (MQP –3)

4. What is the colour of danger signal lights? Why is that colour preferred? (MQP –4)

5. Observe the below given diagram of the human eye. Name the eye defect indicated in this diagram and mention the lens used to correct this defect. (Preparatory – 1)

6. Observe the given diagram and answer the following questions: (Preparatory – 2)

a) What is the colour of the ray of light indicated as A ?

b) Predict the colour of the ray of light indicated as B. Justify your answer.

       THREE MARKS QUESTIONS

1. a) Mention any two symptoms of myopic eye. How can this defect be rectified? (MQP –1)

b) What is power of accommodation of eye?

2. a) What is near-sightedness? (MQP –2)

b) What is power of accommodation of eye? How does the eye accommodate to see distant objects?

OR

Stars appear to twinkle but the planets do not twinkle. Why?

3. What is presbyopia? Mention the reasons and suggest a remedy for this defect? (MQP –3)

OR

What is short-sightedness? What are the reasons for this defect? How can it be corrected?

4. a) A student clearly reads letters of a textbook only when the book is kept at a distance more than 50cm from his eyes without difficulty. Then, (MQP –4)

i) identify this defect of the eye.

ii) suggest a remedy for this defect.

b) When sunlight passes through the trees of a dense forest on a foggy morning then the path of the beam of light appears between the trees.

i) What is this phenomenon called?

ii) The same phenomenon is not normally visible in an open field. Why? Write your analysis.

OR

a) The position of the stars changes apparently in the clear sky. Why? Explain.

b) White light is passed through the given arrangement of three glass prisms (X, Y, and Z) as shown in the figure given below.

i) Is spectrum of light seen on the screen?

ii) What is the role of prism Z

5. Explain the phenomenon of formation of the rainbow in the atmosphere. (Preparatory – 1)

OR

Explain Newton’s experiment that shows the recombination of spectrum of white light.

6. What is myopia (near sightedness ) ? What are the causes for myopia ? Name the type of the lens used to correct myopia. (Preparatory – 2)

OR

a) What is the Tyndall effect ? Which property of the scattering particles decides the colour of the scattered light ?

b) What is the colour of danger signal lights ?

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