# Sample Paper ICSE Class 10 Physics Set D

Students can refer to the following Sample Paper ICSE Class 10 Physics Set D 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 D with Answers

STD: X
PHYSICS Duration : 2 hrs
Max.Marks:80

All questions in Section I are compulsory. Attend any four questions from Section II. The intended marks of questions or parts of questions are given in brackets [ ].

Sample Paper ICSE Class 10 Physics Set D
SECTION – I (40 Marks)

Attempt all question from this Section. Question 1: (a) Give any two effects of a force on a non-rigid body. 2 One end of a spring is kept fixed while the other end is stretched by a force as shown in the diagram.

(i)Copy the diagram and mark on it the direction of the restoring force.
(ii) Name one instrument which works on the above principle. [2]
(c)
(i) Where is the centre of gravity of a uniform ring situated ?
(ii) “The position of the centre of gravity of a body remains unchanged even when the body is deformed.” State whether the statement is true or false. [2]
(d) A force is applied on a body of mass 20 kg moving with a velocity of 40 ms-1. The body attains a velocity of 50 ms-1 in 2 seconds. Calculate the work done by the body. [2]
(e) A type of single pulley is very often used as a machine even though it does not give any gain in mechanical advantage.
(i) Name the type of pulley used.
(ii) For what purpose is such a pulley used ? [2]

Question 2:
(a) How is work done by a force measured when the force :
(i) is in the direction of displacement.
(ii) is at an angle to the direction of displacement. [2]

(b) State the energy changes in the following while in use :
(i) Burning of a candle.
(ii) A steam engine. [2]

(c) (i) A pair of scissors is a ………… multiplier.
(ii) 1 kWh = ……….. J. [2]
(d) Explain the motion of a planet around the sun in a circular path. [2]
(e) Rajan exerts a force of 150 N in pulling a cart at a constant speed of 10 m/s. Calculate the power exerted. [2]

Question 3:
(a) State Snell’s Law of Refraction of light. [2]
(b) When a ray of light passes from air to glass, for what angle of incidence, the ray will not be deviated. [2]
(c) Name the lens that always forms a virtual and erect image. State reason too. [2]
(d) Why are infra-red radiations preferred over ordinary visible light for taking photographs in fog ? [2]
(e) Draw a ray diagram to illustrate how a ray of light incident obliquely on one face of a rectangular glass slab of uniform thickness emerges. [2]

Question 4:
(a) A copper cylinder has a mass of 76.8 g and a specific heat of 0.092 cal/g·C. It is heated to 86.5° C and then put in 68.7 g of turpentine whose temperature is 19.5° C. The final temperature of the mixture is 31.9° C. What is the specific heat of the turpentine? [2]
(b) A liquid has specific heat capacity higher than that of the liquid Y. Which liquid is useful as a coolant in car radiators and why? [2]
(c) Identify the following wires used in a household circuit: [2]
(i) The wire is also called the phase wire.
(ii) The wire is connected to the top terminal of a three-pin socket.
(d) A fuse is rated 6 A. Can it be used with an electrical appliance rated 5 kW, 200 V? Give reason. [2]
(e) A liquid of mass 100 g at 120 ⁰ C is poured into water at 20 ⁰C, when the final temperature recorded is 40⁰WhC. If the specific heat capacity of the liquid is 0.8 Jg-1C-1, calculate the initial mass of water. [2]

SECTION – II (40 Marks)
Attempt any four questions from this Section

Question 5.
(a) The diagram in figure shows a radioactive source S placed in a thick lead walled container. The radiations given off are allowed to pass through a magnetic field. The magnetic field(shown as x) acts perpendicular to the plane of paper inwards. Arrows show the paths of the radiation A, B and C

(i) Name the radiations labelled A, B and C.
(ii) Explain how the diagram was useful to you to arrive at the answer in part (i) [3]

(b) An atomic nucleus A is composed of 84 protons and 128 neutrons.
(i) The nucleus A emits an alpha particle and is transformed into nucleus B. What is the composition of nucleus B?
(ii) The nucleus B emits a beta particle and is transformed into a nucleus C. What is the composition of nucleus C?
(iii) Does the composition of nucleus C change if it emits gamma radiations? [3]

(c) (i) What is meant by radioactivity? Name two radioactive substances. [4]
(ii) What is meant by nuclear waste?
(iii) Suggest one effective way for the safe disposal of nuclear waste.

Question 6.
(a)

(i) Copy and complete the ray diagram to show the formation of the image of the object AB
(ii) Name the lens LL’.
(iii) Name a device in which this principle is used. [3]
(b) Copy and complete the following diagrams to show the path of the ray of monochromatic light in each case as it enters and emerges out of the prism. Mark the angle wherever necessary (critical angle is 42°) .

(c) (i) Name any four regions of electromagnetic spectrum in increasing order of frequency.
(ii) Calculate the refractive index of a liquid with respect to air applying Snell’s law (use geometric construction).

Question 7.
(a) (i) Define a kilowatt hour. How is it related to the joule ?
(ii) How can the work done by measured when force is applied at an angle to the direction of displacement ? [3]
(b) (i) What is the main energy transformation that occurs in : (1) Photosynthesis in green leaves; (2) Charging of a battery.
(ii) Write an expression to show the relationship between mechanical advantage, velocity ratio and efficiency for a simple machine. [3]
(c) A block and tackle pulley system has a velocity ratio 3.
(i) Draw a labelled diagram of this system. In your diagram, indicate clearly the points of application and the directions of the load and effort.
(ii) Why should the lower block of this pulley system be of negligible weight ?

Question 8
(a) Calculate the reading of A when (i) K is closed. (ii) K is open.

(b) In Mrs. Pinto’s flat there are 6 bulbs of 100 W each, a heater of 2 kW and 5 fans of 50W each. If these are used everyday as shown below, calculate the cost of energy consumption for a month of 30 days at the rate of Rs.3.50 per kW h. 6 bulbs of 100 W each used 8 h per day 1 heater of 2 kW used half hour daily 5 fans of 50 W each are used 6 h everyday. [3]
(c) The diagram shows an electrical circuit used for the verification of Ohm’s law. Label A, B C, D and E. Draw a sketch to show how the value of current varies for different values of voltage across C.

Question 9:
a. What is an electric fuse? State two characteristics of an electric fuse. [3]
b. What is internal resistance of a cell? Write two factors on which it depends. [3]
c. The diagrams (i) and (ii) given alongside are of a plug and a socket with arrows marked a as 1, 2,3 and 4, 5, 6 respectively on them. Identify and write Live (L), Neutral (N) and Earth (E) against the correct number.

Question 10:
(a) An electrical appliance is rated at 1000 kVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in : (i) kWh (ii) joule [3]
(b) (i) What is the purpose of using a fuse in an electrical circuit? (ii) What are the characteristic properties of a fuse wire ? [3]
(c) (i) Write an expression for the electrical energy spent in the flow of current through an electrical appliance in terms of I, R and t.
(ii) At what voltage is the alternating current supplied to our houses ?
(iii) How should the electric lamps in a building be connected?