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Substantive Motion UPSC

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Substantive Motion UPSC. We covered all the Substantive Motion UPSC in this post for free so that you can practice well for the exam.

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Mock Test on Substantive Motion for UPSC Students

A person is standing on frictionless horizontal ground. How can he move by a certain distance on this ground?

(a) By sneezing

(b) By jumping

(c) By running

(d) By rolling

Option d – By rolling

Assertion (A) Newton’s Third Law of Motion is applicable only when bodies are in motion. Reason (R) Newton’s Third Law applies to all types of forces, e.g. gravitational, electric, or magnetic forces, etc. Codes

(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

Option d – A is false, but R is true

Which State of India experiences the maximum annual variation of rainfall?

(A) Meghalaya

(B) Kerala

(C) Rajasthan

(D) West Bengal

Show Answer

Conservation of momentum in a collision between particles can be understood on the basis of

(a) Newton’s First Law of Motion

(b) Newton’s Second Law of Motion

(c) Both Newton’s Second Law of Motion and Newton’s Third Law of Motion

(d) Conservation of Energy

Option c – Both Newton’s Second Law of Motion and Newton’s Third Law of Motion

A bullet of mass 10 g is fired with a velocity of 20 m/s from a gun of mass 2 kg. Find the recoil velocity (in m/s) of the gun.

(a) 1

(b) 0.2

(c) 0.1

(d) 2

Option c – 0.1

Pakyong Airport is located in?

(A) Sikkim

(B) Jammu and Kashmir

(C) Arunachal Pradesh

(D) Mizoram

Show Answer

A jet engine works on the principle of

(a) conservation of mass.

(b) conservation of energy.

(c) conservation of linear momentum.

(d) conservation of angular momentum.

Option c – conservation of linear momentum

Statement I When a gun is fired, i.e. it placing pushes back with much less velocity than the velocity of the bullet. Statement II Velocity of the recoiling gun is less because the gun is much heavier than a bullet. According to the Principle of conservation of momentum when the gun is fired, the momentum of the gun and bullet system remains constant. Codes

(a) Both the statements are individually true and statement II is the correct explanation of statement I

(b) Both the statements are individually true but statement II is not the correct explanation of statement I

(c) Statement I is true, but statement II is false

(d) Statement I is false, but statement II is true

Option a – Both the statements are individually true and statement II is the correct explanation of statement I

The impulse on a particle due to a force acting on it during a given time interval is equal to the change in its

(a) force

(b) momentum

(c) work done

(d) energy

Option b – momentum

Action and reaction ………

(a) always act on the same body

(b) are equal in magnitude

(c) are in the same direction

(d) always act independently

Option b – are equal in magnitude

If action and reaction were to act on the same body …..

(a) the result would be zero

(b) the body would not move at all

(c) the body will start moving

(d) only (a) and (b) is correct

Option a – the result would be zero

Rocket works on the principle of

(a) Newton’s First Law

(b) Newton’s Second Law

(c) Newton’s Third Law

(d) Newton’s Fourth Law

Option c – Newton’s Third Law

Why does a cannon recoil after firing?

(a) Conservation of energy

(b) Backward thrust of gases produced

(c) Newton’s Third Law of Motion

(d) Newton’s First Law of Motion

Option c – Newton’s Third Law of Motion

The movement of a horse and a lawn carriage is an example of this principle of physics.

(a) Newton’s Third law

(b) Ohm’s Law

(c) Archimedes Principle

(d) Avogadro’s Law

Option a – Newton’s Third law

Which activity is not based upon kinetic friction

(a) writing

(b) speaking

(c) hearing

(d) walking

Option c – hearing

When a body is moving on a surface, the force of friction is called

(a) static friction

(b) dynamic friction

(c) limiting friction

(d) rolling friction

Option b – dynamic friction

The maximum value of static friction is called

(a) limiting friction

(b) rolling friction

(c) normal reaction

(d) coefficient friction

Option a – limiting friction

A body is acted upon by two unequal forces in opposite directions, but not in one line. The effect is that the body will have

(a) only rotational motion.

(b) only translational motion.

(c) neither the rotational nor the translational motion.

(d) rotational as well as translational motion.

Option d – rotational as well as translational motion

When net torque is zero, ……… will be constant.

(a) force

(b) angular momentum

(c) linear momentum

(d) acceleration

Option b – angular momentum

To open a door easily, the handle should be fixed

(a) near the hinges

(b) away from the mid-point opposite to the hinges

(c) in the middle

(d) None of the above

Option b – away from the mid-point opposite to the hinges

The moment of inertia of a body does not depend upon its

(a) the axis of rotation

(b) angular velocity

(c) form of mass

(d) distribution of mass

Option b – angular velocity

A solid disc and a solid sphere have the same mass and same radius. Which one has the higher moment of inertia about its center of mass?

(a) The disc

(b) The sphere

(c) Both have the same moment of inertia.

(d) The information provided is not sufficient to answer the question.

Option a – The disc

The apparent weight of a man in a lift is less than the real weight when

(a) the lift is going up with acceleration.

(b) the lift is going down with uniform speed.

(c) the lift is going up with uniform speed.

(d) the lift is going down with acceleration.

Option b – the lift is going down with uniform speed

A man weighing 70 kg is coming down in a lift. If the cable of the lift breaks suddenly, the weight of the man would become

(a) 70 kg

(b) 35 kg

(c) 140 kg

(d) zero

Option d – zero

To avoid slipping while walking on ice, one should take smaller steps because the

(a) friction of ice is large.

(b) larger normal reaction.

(c) the friction of ice is small.

(d) smaller normal reaction.

Option c – the friction of ice is small

For every action, there is an equal and opposite reaction. The law was given by

(a) Newton

(b) Albert Einstein

(c) Bohr

(d) Handane

Option a – Newton

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