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Sample Paper – 2010
Class – X
Subject – Physics
Total time: One and half hours
SECTION- A
All questions are Compulsory.
1. What is work? How much work is done when a person is whirling a stone tied to a
string in circular motion? [2]
2. State the law of conservation of energy. [2]
3. What is Mechanical Advantage?A rod of length 120cm has its fulcrum situated
at a distance of 12 cm from the load. What is mechanical advantage of the
rod? [2]+[2]
4. State Archimedes principle. Why does a nail sinks in water while a ship floats on
water? [2]+[2]
5. State the laws of reflection of light. Distinguish between regular and diffused
reflection. [2]+[2]
6. What is coefficient of thermal expansion? Define anomalous expansion of
water? [2]
7. What is the principle of reversibility? Define focal point of a convex lens? [2]+[2]
8. In the following circuit diagram, calculate the effective resistance between A
and B. All resistors are of capacity 3 7.
[2]
A B
9. State Ohm’s law. Define one ohm. Define one electric unit. [4]
10. What is Doppler Effect? Why echoes are not heard in a small room? [2]+[2]
ICSE Physics sample paper by
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11. The frequency and wavelength of a sound are 500 Hz and 5.0m respectively.
Calculate the velocity of sound. [2]
12. What is radioactivity? An element is represented by 92X235. Calculate its mass
number and neutron number. [2]+[2]
13. What is thermionic emission? [1]
14. Name the part of the radioactive emission which is most penetrating? [1]
SECTION-B
Answer any 4(four)questions.
15. (a). One ball(A) of mass m1 strikes another ball(B) with mass m2 at rest. After
collision ball A remains at rest and ball B moves. What is the final velocity of ball
B? [2]
(b). What is the power required to cause an acceleration in a body of mass 10kg
from a velocity of 4m/s2 to 10m/s2.? [4]
(c). Define Mechanical advantage of a lever. Establish the relationship between
Mechanical Advantage, Velocity Ration and efficiency. [4]
16. (a). Explain briefly with a diagram that how can the mechanical advantage of a
lever less than one. [2]
(b). Calculate the work done to push a block of mass 20kg along an inclined
plane, inclined at an angle of 30 degrees with the horizontal. The distance
covered by the block along the inclined plane is 3m. A force of 150N is applied
parallel to the slope. [4]
(c ). Define angle of dip. At what places on earth will the angle of dip be
maximum and minimum? Explain with a diagram. [4]
17. (a). State Pascal’s law. [2]
(b). Refer to the following diagram and answer the questions. [4]
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F1=10kgf
A B
Arm A has area 20cm2 and arm B has area 5 cm2. Calculate:
(i). Pressure at A
(ii) Pressure at B.
(iii) Force at B.
(c). What are the factors affecting upthrust on a partially submerged body?
Explain with a diagram, the working of a hydrometer. [2]+ [2]
18. (a). What is an optical fibre? [2]
(b). Define refraction and angle of deviation. Explain with a graph, the
relationship between angle of deviation and the angle of incidence. [4]
(c ). Complete the diagram given below to form the image of the object ZZ’.
Name the lens used. [4]
L
Z’
O Z O’
L’
19. (a). State Faraday’s laws of electromagnetic induction. [2]
ICSE Physics sample paper by
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(b). Describe the construction and working of a DC motor. [4]
(c). An electric bulb is marked as 220V-60W. The bulb is connected to 220V
supply. Calculate:
(i). Resistance of the filament.
(ii). Current flowing through the filament.
(iii). What is household consumption for the bulb running for six hours?
(iv). What is the amount of heat produced in 3 minutes?
20. (a). Draw a neat labeled diagram of a Hot CRT. [2]
(b). Differentiate between Nuclear fission and Fusion. [3]
(c). An imaginary radioactive element 92X236 decays to form elements
X1,X2,X3,X4 and X6 by ejecting 2β particles followed by an α- particle. Represent
the various nuclear changes with the help of an equation. [3]
(d). What is Carbon-14 dating? [2]
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