Physics 11th 2025 Chapter 3 MCQs
Physics 11th 2025 Chapter 3 MCQs solution.
Tick the correct option.
3.1 The ratio of angular speed of minutes’ s hand and hour’ s hand of a watch is:
(a) 1:6
(b) 6:1
(c) 1:12
(d) 12:1
Correct option is (d)
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3.2 A body travelling in a circle at constant speed:
(a) has constant velocity
(b) has an inward radial acceleration
(c) is not accelerated
(d) has an outward radial acceleration
Correct option is (b)
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3.3 A stone at the end of long string is whirled in vertical circle at a constant speed. The tension in the string will be minimum when the stone is:
(a) at the top of the circle
(b) half way down
(c) at the bottom of circle
(d) any where in the circle
Correct option is (a)
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3.4 Every point of rotating rigid body has:
(a) same angular velocity
(b) same linear velocity
(c) same linear acceleration
(d) same linear distance
Correct option is (a)
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3.5 The minimum velocity necessary to put a satellite into the orbit is called:
(a) terminal velocity
(b) critical velocity
(c) artificial velocity
(d) angular velocity
Correct option is (b)
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3.6 An astronaut is orbiting around the Earth in a large capsule. Then,
(a) he will be in a state of weightlessness with respect to capsule
(b) he is freely falling towards the Earth
(c) a boll projected at an angle has a straight line path as observed by him
(d) all the above
Correct option is (d)
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3.7 An object in uniform circular motion makes 10 revolutions in 2 seconds. Which of the following statement is true?
(a) Its period is 2.0 s
(b) Its period is 20 s
(c) Its frequency is 5 Hz
(d) its frequency is 0.2 Hz
Correct option is (c)
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3.8 A man inside the artificial satellite feels weightlessness because the force of attraction due to the Earth is:
(a) zero at pole
(b) balanced by the force of attraction due to the moon
(c) equal to the centripetal force
(d) non-effective due to some particular design of the satellite
Correct option is (c)
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3.9 A bottle of soda water is grasped from the neck and swung briskly in a vertical circle. Near which portion of the bottle do the bubbles collect?
(a) Near the bottom
(b) In the middle of bottle
(c) Bubbles remain distributed throughout the volume of the bottle.
(d) Near the neck of the bottle
Correct option is (a)
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3.10 The moment of inertia of body depends upon:
(a) mass of the body and its distribution about axis of rotation
(b) volume of the body
(c) kinetic energy of the body
(d) angular momentum of the body
Correct option is (a)
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