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
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
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
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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