ICSE Class 10 Physics Sample Question Paper Set-1

If you are preparing for the ICSE Class 10 Physics exam, then you must practice with papers based on the latest board pattern. This ICSE Class 10 Physics Sample Question Paper Set-1 is designed as per the format prescribed by the council for the Indian School Certificate Examinations. 

This paper covers MCQs, numerical, diagram-based questions and long answer questions. Solving this sample paper will help students understand the marking scheme, improve time management and identify important concepts frequently asked in the exams.

 

Time: 2Hours                                      Maximum Marks: 80

General Instructions:

   1.  Answers to this paper must be written on the paper provided separately.

   2.  You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper.

   3.  The time given at the head of this paper is the time allowed for writing the answers.

   4.  Section A is compulsory. Attempt any four questions from section B.

   5.  The intended marks for questions or parts of questions are given in brackets.

      

Section – A

Q1. Choose the correct answer to the questions from the given options (do not copy the question, write the correct answer only)

(i)     A particle of mass ' m ’ is executing a uniform circular motion on a path of radius ‘r’. If  ‘p’ is the mass, ' m ’ is the magnitude of its linear momentum, then what is the radial force acting on the particle?

(a).       

 (b).   

 (c).    

(d).  

(ii)    A ray of light is incident on one side of a rectangular glass block. Its path is plotted through the block and out through another side. Which path is not possible?

(iii)      One electron volt is equal to:

(a)   1.6 ×10^-10 J

(b)  6.1 ×10¹⁹ J

(c)  1.6 ×10^-17 J

(d)    1.6 ×10^{-19 J}

(iv)    When a nucleus in an atom undergoes radioactive decay, the electronic energy levels of the atom:

(a)   Do not change for any type of radioactivity

(b)    Change for α radioactivity but not for others

(c)    Change for radioactivity but not for others

(d)   Change and radioactivity, but not for radioactivity.

(v)    Assertion (A): A duster lying on a table is an example of static equilibrium.

      Reason (R): When a body remains in the same state of motion under the influence of several forces, then the body is in static equilibrium.

(a)    Both A and R are true, and R is the correct explanation of A

(b)  Both A and R are true, but R is not the correct explanation of A

(c)    A is true, but R is false.

(d)   A is false, but R is true.

(vi)     The electromagnetic wave associated with the highest energy is:

(a)  Infrared rays

(b)  Gamma rays

(c)   X–rays

(d) Ultraviolet rays

(vii)   A man stands between two cliffs at a distance of 133.6 m from the nearer cliff. He fires a gun and hears the first echo after 0.8 s and the second echo after 1.8s. calculate (i) speed of sound (ii) distance between the two cliffs

(a) 434.2m

(b) 234.2m

(c) 334.2 m

(d) 134.2m

(viii)    Sound waves of wavelength  travel in a medium with speed  . They enter another medium where the speed becomes  . What will be the new wavelength?

(a)      

(b)    

(c)   

(d)

(ix)    In the given circuit:

I.    The resistors R₁ and R₂ have not been correctly connected in parallel.

II.   The voltmeter has not been correctly connected in the circuit.

III.  The ammeter and the key have not been correctly connected in the circuit.

 Out of these three, the actual fault in this circuit is/are:

(a)   Only II 

(b)  Both II and III 

(c) Only I

(d)  Both I and II

(x)     Which is the incorrect statement? In a step-down transformer:

(a) The number of turns in the primary is more than the number of turns in the secondary coil.

(b)   The primary coil is thicker are compared to secondary coil.

(c)    The primary coil is thinner than the secondary coil.

(d)    The primary coil is more heavily insulated than the secondary coil.

(xi)    A pulley system has a velocity ratio of 5. If the efficiency of the system is 80%, find its mechanical advantage.

(a)        3

(b)       1

(c)        2

(d)       4

(xii)    50 g of a hot solid of specific heat capacity 0.25 Jg^-1 is placed in 80g of cold water. The temperature of the water rises by 3 . Find the initial temperature of the water.

(a)    26.36

(b)   36.36

(c)    16.36

(d)   6.36

(xiii)   The SI unit of specific latent heat is:

(a)     Cal g^-1

(b)   Jg^-1

(c)     Jkg^-1

(d)   Jkg^-1 K^-1

(xiv)     The most visible colour of the visible spectrum is:

(a)    Red

(b)    Orange

(c)     Green

(d)   Blue

(xv)     A lens forms an inverted image of an object equal to its own size. The object is placed:

(a)    Between 2F₁ and F₁

(b)   Beyond infinity and 2F₁

(c)    Between F₁ and the optical centre

(d)    At 2F₁

Q2. Answer the following questions

(a)        i. Considering that a simple physical balance works as an ideal lever, what is its mechanical advantage?

ii. Name a machine which can be used to: (a) multiply force, (b) change the direction of force applied.

iii. A pulley system has a velocity ratio of 3 and an efficiency 80%. Calculate its mechanical advantage.

(b)    A half-meter ruler is suspended at its midpoint. It balances horizontally when a 50 g weight and an unknown weight are suspended from 10 cm and 45 cm marks, respectively. Find the unknown weight.

(c)        What is a lever? State its principle.

(d)       A man opens a nut by applying a force of 150 N using a lever handle of length 0.4m. What should be the length of the handle if he applies only 60N?

(e)        A motor pump of power 5kW raises water to a height of 20m . How much water per minute can it raise? (g=10ms^-1)

(f)      An electric kettle is rated at 230 V, 1000 W.

(i)        Find the resistance of the element.

(ii)      Find the safe current passing through it.

(g)       A radar sends a signal to an aeroplane 4.5 km away at a speed 3× 10⁸ ms^-1. After how long is the signal received back from the aeroplane?

Q3. Answer the following questions: [10 Marks]

(a)     An electromagnetic wave has a frequency of 500 MHz and wave length 60cm. Calculate its velocity.

(b)       How does earthing prevent electric shock?

(c)        Draw a labelled diagram of a three-pin socket.

(d)   50 g of a metal piece at 27  requires 2400 J of heat to reach 327 . Calculate its specific heat capacity.

(e)        (i) Why is nuclear fusion called a thermonuclear reaction?

              (ii)              Complete the reaction:

             

Section B (Attempt 4 Questions)

Q4. Answer the following questions

(a)        A ray of light bends when passing obliquely from one medium to another, but does not bend at normal incidence. Will the speed change in the other medium? Give a reason.

(b)       State the meaning of:

i.       Heat capacity = 50 J^-1

ii.      Specific latent heat of fusion of ice=336000Jkg^-1

iii.    Specific heat capacity of copper =0.4 Jg^-1-1

(c)        Can a convex lens burn a piece of paper in sunlight? Justify with a ray diagram.

Q5. Answer the following questions [10 marks]

(a)        A diver underwater looks at an object in the air.

i.        Does the object appear taller, shorter or the same size?

ii.     Show the ray path and image formation.

(b)       A lens forms an erect, magnified, virtual image.

i.         Name the lens

ii.        Draw the ray diagram.

(c)    An object is placed between F and 2F of a convex lens. Draw the ray diagram for image formation.

Q6. Answer the following questions [10 marks]

(a)        From the pulley diagram:

i.        Identify types of pulleys A and B

ii.      State the purpose of pulley B.

iii.   Calculate the effort needed to lift 20 kgf. (Neglect the weight of pulley A and friction)

(b)      A half metre rule balance on a knife edge at 29 cm when a 20 gf weight is suspended.

i.         Draw the diagram.

ii.      Find the weight of the rule.

(c)     In three cases, forces act on an object while displacement is from West to East. State whether the work done is positive, negative or zero.

Q7. Answer the following questions. [10 Marks]

(a) The figure shows the trace of a sound wave which is produced by a particular tuning fork.

i.        A trace of a sound wave is shown:

ii.      Draw a trace for a higher pitch.

iii.  Draw a trace for a louder sound.

(b)   Differentiate between nuclear fusion and nuclear fission. State the safety precautions for the disposal of nuclear waste.

(c)        i. What is a person trying to do while tuning a radio?

ii.      Name the phenomenon involved.

iii.    Define it.

Q8. Answer the following questions. [10 Marks]

(a)        A wire of diameter 0.25 mm and resistivity 0.8×10^-8 Ωm.

i.        Find the length for resistance 5 Ohms.

ii.    What happens to resistance if the diameter is doubled?

(b)     A nucleus    changes to    :

i.       Name the particle emitted.

ii.      Write the equation.

iii.    What change occurs in radioactivity on oxidation?

(c)      In a given circuit, the ammeter reads 0.3 A. Calculate:

 i.     Total resistance

ii.     Value of R

iii.     Current through R

Q9.  Answer the following questions: [10 marks]

(a)   i. Define heat capacity.

     ii.   Write its SI unit.

    iii.    Relation between heat capacity and specific heat capacity.

(b)     Temperature vs time graph for the change of phase is given:

i.         Why is the slope of the liquid portion less than that of the solid portion?

ii.      Identify melting and boiling points.

(c)       i.    Draw a labelled diagram of a DC motor.

ii.     Function of split rings.

iii.    One advantage of AC over DC.