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

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

Question # 2

During the upward motion of the projectile, the vertical component of velocity.

Question # 3

Tick the conservation force:

Question # 4

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 5

The artillery shells travel along parabolic paths under the influence of

Question # 6

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 7

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 8

The path described by a projectile is called its

Question # 9

Unit of impulse in

Question # 10

Force is a:

Question # 11

If the velocity time graph is a straight line parallel to the time-axis, then it means:

Question # 12

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 13

Force is a:

Question # 14

Tick the conservative force:

Question # 15

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Question # 16

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 # 17

Essential characteristic of equilibrium is

Question # 18

Newton's laws are adequate for speeds that are

Question # 19

Which quantity has the same dimension as that of impulse?

Question # 20

A body whose momentum is constant must have constant

Question # 21

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 22

Slope of velocity time graph represents:

Question # 23

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

Question # 24

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 25

Newton's first law is also called:

Question # 26

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 27

The decrease in velocity per unit time is called

Question # 28

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

Question # 29

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 30

Graphs which are used to illustrate the variation of velocity of an object with time are called

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
2 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
3 The consumption source if energy is:
A. Energy from blomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
4 In equation F=ma, then mass 'm' is
A. rest mass
B. variable mass
C. inertial mass
D. gravitational mass
5 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve
6 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
7 An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow
A. a circular path
B. a straight line
C. a hyperbola
D. a parabola
8 A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
9 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
10 A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after
A. 10 s
B. 20 s
C. 5 s
D. 40 s

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