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

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 2

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 # 3

Velocity is a

Question # 4

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 5

The direction of the linear momentum is the direction of

Question # 6

The product of force and time is called change in:

Question # 7

Inertia mass and gravitational mass are

Question # 8

Ethanol (alcohol) as a type of:

Question # 9

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

Question # 10

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 11

Blomass includes:

Question # 12

Velocity of a body changes if

Question # 13

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

Question # 14

Which of the following statements for an object in equilibrium is not true?

Question # 15

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
2 Rocket engines lift a rocket from the earth surface, because hot gas with high velocity
A. Push against the air
B. React against the rocket and push it up
C. Heat up the air which lifts the rocket
D. Push against the earth
3 A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds
A. 25 m
B. 20 m
C. 50 m
D. 9.8 m
4 Tick the conservation force:
A. Tension in a string
B. Air resistance string
C. Elastic spring force
D. Frictional force
5 Newton's first law is also called:
A. Law of torque
B. Law of force
C. Law of inertia
D. None of these
6 Ethanol (alcohol) is a type of:
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
7 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
8 When we consider the average velocity of a body, then the body is moving in
A. straight line
B. curved path
C. may be in a straight or curved path
D. none of them
9 Velocity of a body changes if
A. direction of the body changes
B. speed of the body changes
C. neither speed nor direction changes
D. either speed or direction changes
10 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them

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