# Sample Paper ICSE Class 10 Physics Set I

Students can refer to the following Sample Paper ICSE Class 10 Physics Set I with Answers provided below based on the latest syllabus and examination guidelines issued for ICSE Physics. All specimen papers have been prepared covering all chapters given in ICSE Physics book for Class 10. You should also refer to ICSE Class 10 Physics Solutions.

Sample Paper ICSE Class 10 Physics Set I with Answers

Subject: Physics (Paper 1)

Answer to this paper must be written on the paper provided separately.
You will not be allowed to write during the first 15 minutes.
This time is to be spent in reading the question paper, the time given at the head of
this paper is the time allowed for writing the answers.
Section A is compulsory. Attempt any four questions from section B.
The intended marks for the questions or parts of questions are given in brackets ( ).

SECTION – A [40 MARKS]
All question are compulsory in this Section.

Question 1
a) List two reasons why efficiency of a single movable pulley is not 100%. (2)
b) Name the energy changes in the following: (2)
i. An electric cell in a circuit.
ii. Solar furnace

c) A pair of scissors and a pair of pliers belong to the same class of levers. (2)
i. Name the class of levers.
ii. Which one of them has M.A. > 1.

d) What do you mean by lateral displacement? Explain with the help of a neat abelled diagram.(2)
e) State a consequence of total reflection. Explain the phenomenon. (2)

Question 2
a) What are mirror isobars? Give one example. (2)
b) State the two characteristics required in a material to be used as an effective fuse wire.(2)
c) A radar sends a signal to an aeroplane at a distance of 300 km away with a speed of 3 x 108 ms -1. After how much time is the signal received back after reflecting from the aeroplane.
d) State the factor that determines. (2)
i. The pitch of a note
ii. The loudness of sound
e) What are tracers? How are they useful? (2)

Question 3
a) What is copper loss? How can you reduce it? (2)
b) Name the prism used to obtain the spectrum of: (2)
i. UV light
ii. Infra-red light
c) Define calorie. State its relation to SI unit Joule. (2)
d) Mention any two safety rules for handling radioactive materials. (2)
e) Calculate the equivalent resistance between points A and B for the following combinations of resistors.(2)

Question 4
a) List the colour code of wires for cables used in house wiring. (any two) (2)
b) Calculate the value of resistance which must be connected to 15 ohms to provide an effective resistance of 6 ohms. (2)
c) What happens to the temperature of the surrounding when a frozen lake starts melting?(2)
d) Name the commercial unit of electrical energy. Define it. (2)
e) What is the work done when a body moves in a circular path? Explain giving suitable reason.(2)

SECTION – B [40 MARKS]
Attempt any four questions from this section.

Question 5
a) Define lever. Name the principle on which it works. Draw a diagram of a claw hammer stating which class of levers it belongs to. (3)
b) What does the position of centre of gravity of a body depend on? Explain with a suitable example.(3)
c) The figure shows a fixed pulley used by a lady to draw water from the well having load of 500 N through a vertical height of 10 meters in 50 s. The effort applied by the lady
on the other end of the rope is 550 N.(4)
i. What is the M.A. of the pulley?
ii. Calculate the efficiency of the pulley?
iii. What is the energy gained by the load in 50s.
iv. How much power was developed by the lady
in drawing water from the well?

Question 6
a) The diagram alongside shows the refraction of ray of light from air to liquid: (3)
i. Write the value of angle of incidence.
ii. Write the value of angle of refraction.
iii. Use Snell’s law to find refractive index of liquid with respect to air.

b) A light ray of monochromatic nature is incident on the following prisms A, B and C. Redraw the diagrams by drawing the path of ray of light as it emerges out of the prism. Mark the angles wherever necessary.

c) Define critical angle. State the relationship between critical angle and refractive index. List the two factors on which the critical angle depends. (4)

Question 7
a) Three different modes of vibration of a string of length 1, is shown in the diagram given below:(3)
i. Which of the vibration is of the faint sound? Why?
ii. Which of the vibration is of the least shrillness?
iii. What is the ratio of wavelength between (a) and (c)?

b) The diagram shows the displacement time graph of a vibrating body: (3)
i. Name the kind of vibrations.
ii. Give an example.
iii. Why is the amplitude of vibration gradually decreasing?

c) i. Express 5 kWh into joule. (4)
ii. The energy of an electron is 4 X 10-19J. Express it in eV.

Question 8
a) State the principle of method of mixture. What is the mathematical statement for it. Name the law on which the above principle is based. (3)
b) A hot iron ball of mass 0.5 kg is added into 1 kg of water at 20C. The resulting temperature is 60C. Calculate the temperature of hot ball. (3)
(SHC of iron = 336 J kg-1K-1 and SHC of water = 4.2 x 10-3J kg-1 K-1) c) Give reason for the following statements: (4)
i. Water is used as an effective coolant.
ii. The base of a cooking pan is made thick.

Question 9
a) How does nuclear fission differ from a radioactive decay? (3)