ECAT Pre General Science Physics Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

Angular momentum

Question # 2

Earth is considered to be

Question # 3

Newton's laws are adequate for speeds that are

Question # 4

A body whose momentum is constant must have constant

Question # 5

The motion of a body in a straight line is the motion in

Question # 6

Distance covered by a freely falling body in 2 sec will be

Question # 7

The entity which measures the quantity of motion in a body is called

Question # 8

Root out the conventional source of energy:

Question # 9

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 10

What must be changing when a body is accelerating uniformly?

Question # 11

The projectile attains maximum horizontal range when it is projected at an angle of

Question # 12

The path followed by the projectile is known as:

Question # 13

A typical rocket ejects the burnt gases at speeds over

Question # 14

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 15

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

Question # 16

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 17

The effect of applying a force on a moving body is to change

Question # 18

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

Question # 19

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

Question # 20

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 21

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

Question # 22

Essential characteristic of equilibrium is

Question # 23

When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts

Question # 24

A typical rocket consumes about

Question # 25

Rate of change of momentum is called

Question # 26

In the expression F x t, the force F is

Question # 27

If a ball comes back to its starting point after bouncing off the wall several times, then its

Question # 28

A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be

Question # 29

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

Question # 30

When the surfaces are coated with a lubricant, then they

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
2 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
3 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
4 If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be
A. 20 ms-2
B. 10 ms-2
C. 2 ms-2
D. 1 ms-2
5 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
6 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
7 Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is
A. 22 m
B. 6 m
C. 33 m
D. 7.8 m
8 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have
A. different values
B. same values
C. zero valves
D. constant valves
9 If the instantaneous velocity of a body does not change. the body is said to be moving with
A. average velocity
B. uniform velocity
C. instantaneous velocity
D. variable velocity
10 Distance traveled by a body falling from rest in the first, second and third second is in the ration of
A. 1 : 2 : 3
B. 1 : 3 : 5
C. 1 : 4 : 9
D. None of the above

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