ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

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

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then

Question # 2

The velocity of a projectile is maximum

Question # 3

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 4

The direction of the linear momentum is the direction of

Question # 5

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 6

Acceleration produced in a body by a force varies

Question # 7

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Question # 8

A 5 kg mass is falling freely, the force acting on, it will be

Question # 9

Newton's first law is also called:

Question # 10

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 11

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 # 12

For a fixed force, larger is the mass of a body the

Question # 13

When we consider the average velocity of a body, then the body is moving in

Question # 14

The time rate of change of displacement is called:

Question # 15

A change in position of a body from its initial position to its final position is known as

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
2 A cold soft drink is kept on the balance. When the cap is opened, then the weight
A. Increases
B. Decreases
C. First increases, then decreases
D. Remains same
3 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
4 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work
5 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
6 The distance covered by a body in unit time is called.
A. Displacement
B. speed
C. Velocity
D. Both B and C
7 An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called
A. a rocket
B. an aeroplane
C. a projectile
D. a ballon
8 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
9 A dirty carpet is to be cleaned by heating. This is in according with______law of motion.
A. First
B. Second
C. Third
D. None of these
10 If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s

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