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

The quantity F x t is called as

Question # 2

A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?

Question # 3

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

Question # 4

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

Question # 5

Linear momentum is a

Question # 6

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?

Question # 7

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 # 8

The direction of velocity is along the direction of

Question # 9

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 10

In equation F=ma, then mass 'm' is

Question # 11

Newton's first law is also called:

Question # 12

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

Question # 13

The slopes of the tangent at any point on the curve gives the value of the

Question # 14

Acceleration in a body is always produced in the direction of :

Question # 15

Tick the conservative force:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
3 For a fixed force, larger is the mass of a body the
A. greater is its acceleration
B. smaller is its acceleration
C. smaller is its weight
D. zero is its acceleration
4 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
5 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
6 The velocity of a projectile is maximum
A. at the point of projection
B. just before striking the ground
C. at none of them
D. at both of them
7 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
8 An inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0
C. a < 0
D. all of them
9 The discuss used by athlete has a mass of 1 kg, its weight in newton is
A. 9.8 N
B. 80 N
C. 98 N
D. 100 N
10 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2

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