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 inertial frame of reference is that frame of reference in which

Question # 2

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

Question # 3

One KWh is equal to:

Question # 4

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 5

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

Question # 6

Tick the conservative force:

Question # 7

The vertical component of velocity of a projectile during its motion is minimum

Question # 8

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

Question # 9

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

Question # 10

Ethanol (alcohol) is a type of:

Question # 11

The projectile motion is composed of

Question # 12

A non-inertial frame of reference is that frame of reference in which

Question # 13

Change in momentum is one second called.

Question # 14

The decrease in velocity per unit time is called

Question # 15

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
2 A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be
A. 40 km/h
B. 48 km/h
C. 50 km/h
D. 60 km/h
3 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
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N
4 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
5 If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:
A. Force
B. Energy
C. work
D. impulse
6 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
7 If a ball comes back to its starting point after bouncing off the wall several times, then its
A. total displacement is zero
B. average velocity is zero
C. none of them
D. both of them
8 If two bodies of equal masses moving in the same direction collide elastically, then their velocities.
A. Are added
B. Are subtracted
C. Do not change
D. Are exchanged
9 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
10 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3,6 x 101KJ
D. 3,6 MJ

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