Organisation : Kerala State Council of Educational Research and Training (SCERT)
Exam : Class X (SSLC)
Document Type : Model/Sample Question Paper
Subject : Physics
Term : Summative Assessment (Term III)
Year : 2026
Website : https://scert.kerala.gov.in/sslc2026modq/
SCERT Kerala Class X Physics Sample Question Paper
Kerala State Council of Educational Research and Training (SCERT) Class X Physics Summative Assessment (Term III) Model/Sample Question Paper 2026.
SCERT Kerala Class X Physics Sample Questions
Section-A:
Select the correct answer for questions 1 to 4. Each question carries 1 score. (4 x 1 = 4)
1. What happens when the frequency of a sound wave produced near an object is equal to the natural frequency of the object? (1)
i) The object vibrates.
ii) The object reflects the sound wave.
iii) The object is in resonance.
iv) The object produces a different frequency.
Which of the statements is/are correct?
a) iv only,
b) i and iii,
c) ii and iii,
d) iii and iv
2. Statement : Myopia (Short sightedness) can be corrected with concave lenses.
Reason : Concave lenses diverge light rays and focus on the retina.
Which of the following options is correct?
a) Both Statements and reason are correct, and the reason explains the Statement.
b) Both Statements and reason are correct, but the reason does not explain the Statement.
c) The Statement is correct, but the reason is incorrect.
d) The Statement is incorrect, but the reason is correct.
Section-B:
Answer questions from 5 to 11. Questions 5 and 11 have a choice. Each question carries 2 scores.
1. A. A movie projector displays 24 frames per second on the screen. What is the peculiarity of the eye to see moving pictures like a cinema? Explain how this peculiarity helps in the perception of moving pictures. (2)
OR
B. If two primary colours of light, red and green, overlap on a screen, what secondary colour will be formed? Which is the complimentary colour of this secondary colour? Give reason. (2)
2. A sonar device on a ship sends a sound wave to the sea floor and receives the echo 4 s later. If the speed of sound in water is 1500 m/s, what is the depth of the sea there?
3. The path of a ray of light passing through a concave lens parallel to its principal axis drawn by a child is given below.
a) What is the mistake in the ray diagram? (1)
b) Redraw the correct diagram. (1)
4. In the figure, a conductor AB is arranged across parallel copper wires placed on an acrylic sheet above a ring magnet. A 12V battery is connected to the parallel conductors through a bell switch.
a) Find the direction of motion of the conductor AB when the bell switch is turned ON. Justify your finding. (1)
b) What change should be made to move the conductor AB in the opposite direction?
5. An electric device has a resistance of 30 Ω and is designed to operate at a power of 120 W. What voltage must be applied to get this power? (2)
6. Observe the given picture and answer the following questions
a) An electric current is not continuously produced through the secondary coil when the switch is turned ON? Explain why? (1)
b) What change should be made in the primary circuit to ensure a continuous electric current in the secondary coil? (1)
7. A. A wheel and axle system is used to lift a load of 500 kg. If the radius of the wheel is 0.8 m and the radius of the axle is 0.2 m, what is the force required to lift the load?
OR
B. A force of 100 N is required to push a load up an inclined plane of length 5 m and height 3 m. Calculate the mechanical advantage of the inclined plane. (2)
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