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

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

Question # 2

Tick the conservation force:

Question # 3

Laws of motion are not valid in a system which is

Question # 4

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 # 5

Bodies which falls freely under gravity provides good example of motion under:

Question # 6

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 7

The projectile motion is composed of

Question # 8

The path (or trajectory) described by a projectile is

Question # 9

When the surfaces are coated with a lubricant, then they

Question # 10

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

Question # 11

An inertial frame of reference is that frame of reference in which

Question # 12

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 13

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

Question # 14

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Question # 15

The short distance between two points direction from its initial point to final point is called:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the acceleration of a body is not uniform, then velocity-time graph will be:
A. Curve
B. Straight line
C. Sphere
D. All of these
2 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:
A. First
B. Second
C. Third
D. None of these
3 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4
C. 12.6
D. None of these
4 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
5 When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.
A. Becomes half
B. Becomes zero
C. Ramains same
D. Becomes double
6 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
7 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
8 Acceleration of a body at any particular instant during its motion is known as
A. average acceleration
B. uniform acceleration
C. instantaneous acceleration
D. all of them
9 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
10 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

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