ICSE Class 10 Physics Important Questions Chapter wise. We covered all the important questions of physics class 10 icse in this post for free so that you can practice well for the exam.
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ICSE Class 10 Physics Important Questions Chapter wise for Students
The speed of sound in air is 300 m/s. The distance between two successive nodes of a stationary wave of frequency 1000 Hz is :
(A) 10 cm
(B) 15 cm
(C) 20 cm
(D) 30 cm
Option b – 15 cm
A stationary wave of frequency 300 Hz is formed in a medium in which the velocity of sound is 1200 m/s. The distance between a node and the neighboring antinode is ( ICSE Class 10 Physics Important Questions )
(A) 1 m
(B) 2 m
(C) 3 m
(D) 4 m
Option a – 1 m
In stationary waves, all the particles of the medium are :
(A) At rest together two times in each time period
(B) At rest together once in each time period
(C) Never at rest together
(D) Not at rest under any condition
Option a – At rest together two times in each time period
In stationary waves, antinodes are the points where there are: ( ICSE Class 10 Physics Important Questions )
(A) Minimum displacement and minimum pressure change
(B) Minimum displacement and maximum pressure change
(C) Maximum displacement and maximum pressure change
(D) Maximum displacement and minimum pressure change
Option d – Maximum displacement and minimum pressure change
Which of the following changes at an antinode in a stationary wave?
(A) Density only
(B) Pressure only
(C) Both pressure and density
(D) Neither pressure nor density
Option d – Neither pressure nor density
Which of the following properties makes difference between progressive and stationary waves? ( ICSE Class 10 Physics Important Questions )
(A) Amplitude
(B) Frequency
(C) Propagation of energy
(D) Phase of wave
Option c – Propagation of energy
In stationary waves, all particles between two nodes pass through the mean position :
(A) At different times with different velocities
(B) At different times with the same velocity
(C) At the same time with equal velocity
(D) At the same time with different velocities
Option d – At the same time with different velocities
Stationary waves :
(C) Have crests and troughs
(D) Have compressions and rarefactions
In stationary waves : ( ICSE Class 10 Physics Important Questions )
(A) Energy is uniformly distributed
(B) Energy is minimum at nodes and maximum at antinodes
(C) Energy is maximum at nodes and minimum at antinodes
(D) Alternating maximum and minimum energy producing at nodes and antinodes
Option b – Energy is minimum at nodes and maximum at antinodes
Stationary waves cannot be produced in the:
(A) Thin wire
(B) Thick wire
(C) Short wire
(D) Infinitely long wire
Option d – Infinitely long wire
The maximum possibility of turbulent flow is in a fluid of ( ICSE Class 10 Physics Important Questions )
(A) low density and low viscosity
(B) high density and high viscosity
(C) low density and high viscosity
(D) high density and low viscosity
Option d – high density and low viscosity
Which of the following is not characteristic of turbulent flow?
(A) Velocity more than the critical velocity
(B) Velocity less than the critical velocity
(C) Irregular flow
(D) Molecules crossing from one layer to another
Option b – Velocity less than the critical velocity
When the velocity of a liquid is greater than its critical velocity then the flow of the liquid will be : ( ICSE Class 10 Physics Important Questions )
(A) streamline
(B) turbulent
(C) sometimes streamlined and sometimes turbulent
(D) none of the above
Option b – turbulent
In turbulent flow, the velocity of the liquid molecules in contact with the walls of the tube :
(A) is zero
(B) is maximum
(C) may have any value
(D) is equal to the critical velocity
Option c – may have any value
For the flow of a fluid to be turbulent : ( ICSE Class 10 Physics Important Questions )
(A) fluid should have high density
(B) critical velocity should be large
(C) Reynold’s number should be less than 2000
(D) all the above
Option a – fluid should have high density
In the case of streamlining the flow of a non-viscous and incompressible liquid through a tube of nonuniform cross-section, what will be the ratio of masses of liquid entering and coming out of the tube? The ratio of cross sections of the tube at two places is 5 : 1
(A) 1 : 1
(B) 2 : 5
(C) 1:25
(D) 5 : 2
Option a – 1 : 1
Which of the following is not the property of laminar flow? ( ICSE Class 10 Physics Important Questions )
(A) Flow may be along a curved path
(B) Velocity of flow is independent of time
(C) Velocity of flow may be different at different points
(D) Liquid molecules may cross from one layer into the other
Option d – Liquid molecules may cross from one layer into the other
In streamline flow, which of the following is correct?
(A) The speed of flow at all points in space is necessarily the same
(B) the speed of every particle at one point is the same but it is different at different points in place
(C) the velocity of every particle at a particular point is the same
(D) the velocity of different particles at the same point in space is different
Option c – the velocity of every particle at a particular point is the same
When a fluid is in streamlined flow, then the reason for the viscous force acting between its two layers is : ( ICSE Class 10 Physics Important Questions )
(A) transport of energy from one layer to another
(B) transport of linear momentum from one layer to another
(C) the same velocity of molecules
(D) the variable density along the length of the tube
Option b – transport of linear momentum from one layer to another
In a laminar flow; the velocity of flow at any point in the liquid :
(A) does not vary with time
(B) may vary in magnitude but not in the direction
(C) may vary in direction but not in magnitude
(D) may vary both in magnitude and direction
Option a – does not vary with time
In streamlined flow, the velocity of the liquid in contact with the containing vessel is : ( ICSE Class 10 Physics Important Questions )
(A) zero
(B) large
(C) minimum but not zero
(D) infinite
Option a – zero
The flow of liquid in laminar or streamlined is determined by the:
(A) the rate of flow of liquid
(B) the density of the liquid
(C) the radius of the tube
(D) the coefficient of viscosity of the liquid
Option a – the rate of flow of liquid
Streamline flow is more likely for liquids with ( ICSE Class 10 Physics Important Questions )
(A) high density and low viscosity
(B) low density and high viscosity
(C) high density and high viscosity
(D) low density and low viscosity
Option b – low density and high viscosity
A liquid column of vertical height 1.2 m exerts a pressure of 19992 Pa at the bottom. The density of the liquid is :
(A) 1400 kg/m³
(B) 1600 kg/m³
(C) 1500 kg/m³
(D) 1700 kg/m³
Option d – 1700 kg/m³
At what depth in the water the pressure will double the atmospheric pressure? ( ICSE Class 10 Physics Important Questions )
(A) 10.34 m
(B) 20.34 m
(C) 15.34 m
(D) 25.34 m
Option a – 10.34 m
An atmosphere :
(A) is a unit of pressure
(B) is a unit of force
(C) gives us an idea of the composition of air
(D) is the height above which there is no atmosphere
Option a – is a unit of pressure
The pressure in a liquid at a given depth below the surface : ( ICSE Class 10 Physics Important Questions )
(A) is always exerted downward
(B) is the same in all directions
(C) equals the total weight of liquid above that depth
(D) depends upon the amount of liquid below the depth
Option b – is the same in all directions
The pressure at the bottom of a liquid tank is not proportional to the :
(A) acceleration due to gravity
(B) the density of the liquid
(C) height of the liquid
(D) area of the liquid surface
Option d – area of the liquid surface
A disc is placed at the bottom of a water tank. The thrust on it due to water is E. If another disc of double the area is placed at the bottom of the same water tank, the thrust on it will be : ( ICSE Class 10 Physics Important Questions )
(A) F
(B) 3F
(C) 2F
(D) 4F
Option c – 2F
The pressure at any point in a liquid depends upon :
(A) the density of the liquid
(B) the value of g
(C) the depth of the point below the surface
(D) all of the above
Option d – all of the above
An open glass tube is immersed in mercury in such a way that a length of 8 cm extends above the mercury level. The open end of the tube is then closed and sealed and the tube is raised vertically up by an additional 46 cm. What will be the length of the air column above the mercury in the tube now? (Atmospheric pressure = 76 cm of Hg) ( ICSE Class 10 Physics Important Questions )
(A) 38 cm
(B) 6 cm
(C) 16 cm
(D) 22 cm
Option c – 16 cm
A body of mass 0.5 kg is whirled in a vertical circle at an angular frequency of 10 rad/s. If the radius of the circle is 0.5 m, what is the tension in the string when the body is at (A) the top of the circle (B) the bottom of the circle?
(A) 10 N and 20 N
(B) 20 N and 30 N
(C) 30 N and 20 N
(D) 40 N and 30 N
Option b – 20 N and 30 N
The pilot of an aircraft who is not tied to his seat can loop a vertical circle in the air without falling out at the top of the loop. What is the minimum speed required so that he can successfully negotiate a loop of a radius of 4 km? ( ICSE Class 10 Physics Important Questions )
(A) 200 m/s
(B) 50 m/s
(C) 100 m/s
(D) 300 m/s
Option a – 200 m/s
The hour hand and the minute hand of a clock coincide at every relative periodic time:
(A) 11/12 hour
(B) 12/11 hour
(C) 11/6 hour
(D) 12/24 hour
Option b – 12/11 hour
In a rotor, a hollow vertical structure rotates about its axis as a person rests against the inner wall. At a particular speed of the rotor, the floor below the person is removed and the person hangs resting against the wall without any floor. It radius of the rotor is 2 m and the coefficient of static friction between the wall and the person is 0.2. Then the minimum speed at which the floor may be removed : ( ICSE Class 10 Physics Important Questions )
(A) 100 m/s
(B) 0.1 m/s
(C) 1 m/s
(D) 10 m/s
Option d – 10 m/s
A cyclist moving with a speed of 6 m/s. As he approaches a circular turn on the road with of a radius 120 m he applied brakes and reduces his speed at a constant rate of 0.4 m/s². The magnitude of the net acceleration of the cyclist on the circular turn is at :
(A) 0.5 m/s²
(B) 1 m/s²
(C) 0.1 m/s²
(D) 0.55 m/s²
Option a – 0.5 m/s²
A particle travels in a circle of radius 20 cm at a speed that uniformly increases. If the speed changes from 5 m/s to 6 m/s in 2 seconds, then angular acceleration is : ( ICSE Class 10 Physics Important Questions )
(A) 5.2 rad/s²
(B) 6.2 rad/s²
(C) 2.5 rad/s²
(D) 5 rad/s²
Option c – 2.5 rad/s²
The magnitude of the linear acceleration of a particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4 seconds is :
(A) 0.244 m/s²
(B) 0.242 m/s²
(C) 0.422 m/s²
(D) 0.224 m/s²
Option a – 0.244 m/s²
A particle moves in a circle of radius 20 cm. Its linear speed is given by v = 2t where t is in second and v in m/s. Radial and tangential acceleration at t = 3 seconds is :
(A) 160 m/s², 1 m/s²
(B) 4 m/s², 100 m/s²
(C) 180 m/s², 2 m/s²
(D) 120 m/s², 9 m/s²
Option c – 180 m/s², 2 m/s²
A pulley one meter in diameter rotating at 600 rpm is brought to rest in 80 sec by a constant force of friction on its shaft. How many revolutions does it make before coming to rest?
(A) 100 rev
(B) 400 rev
(C) 200 rev
(D) 300 rev
Option b – 400 rev
A particle of mass ‘m’ is moving in a circular path of constant radius ‘r’ such that centripetal acceleration is varying with time ‘t’ as K²rt² where K is a constant. The power delivered to the particle by the force acting on it is :
(A) m² K² r² t²
(B) mk² r² t
(C) m K²rt²
(D) m Kr²t
Option b – mk² r² t
A body of mass 1 kg is moving in a vertical circle with a speed of 3 m/s and has a tension of 18.8 N in a circular path of radius 1m. The position of the body is
(A) Top of the circle
(B) Bottom of the circle
(C) Inclined at an angle of 45° with a horizontal diameter
(D) Inclined at an angle of 45° with a vertical diameter
Option b – Bottom of the circle
The kinetic energy of a particle moving with constant speed on a circular path of radius 20 m is 200 J. The centripetal force acts on the particle are:
(A) 10 N
(B) 100 N
(C) 20 N
(D) 200 N
Option c – 20 N
Tension in the string in a vertical circle of radius 1m in circular motion is 6.2 N at a certain position where speed is 4 m/s. If the mass of the stone attached to the string is 1 kg. The position is :
(A) Top of circle
(B) Bottom of the circle
(C) Inclined at an angle of 45° with the horizontal diameter
(D) Inclined at the angle of 45° with the vertical diameter
Option a – Top of circle
Does an automobile have a mass of 1000 kg what centripetal force is necessary for this vehicle to make a uniform 90° turn at 72 km/hr in a distance of 1570 m along the road?
(A) 200 N
(B) 400 N
(C) 600 N
(D) 800 N
Option b – 400 N
A curved road of a 100 m radius is banked at a correct angle for a given speed. If the speed is too halved, keeping the same banking angle the radius of the curvature of the road will be changed.
(A) 35 m
(B) 25 m
(C) 45 m
(D) 55 m
Option b – 25 m
A particle of mass m is in UCM of radius r and has momentum equal to P. Its KE is equal to
(A) P²/2m
(B) P²/2m
(C) P/2m
(D) P/m
Option b – P²/2m
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