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 body moving with uniform velocity has

Question # 2

Acceleration of a body is negative if the velocity of the body is

Question # 3

When two protons are brought closer potential energy of both of them:

Question # 4

If d is the displacement of the body in time t, then its average velocity will be

Question # 5

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

Question # 6

Change in momentum is one second called.

Question # 7

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

Question # 8

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 9

Newton published laws of motion in his famous book "principia" in

Question # 10

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 11

One KWh is equal to:

Question # 12

Which of the following is not a projectile

Question # 13

The mass of the object is a quantities measure of its

Question # 14

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

Question # 15

Work done along a closed path in a gravitational field is:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only
2 A body moving with uniform velocity has
A. positive acceleration
B. negative acceleration
C. infinite acceleration
D. zero acceleration
3 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?
A. 0.1 m/s
B. 10 m/s
C. 1 m/s
D. 0.01 m/s
4 By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)
A. 58.8 m/s
B. 49 m/s
C. 65 m/s
D. 19.6 m/s
5 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
6 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
7 A particle of mass 0.5 g moving along x-axis is located of x1= 15 m at t1= 5s and x2= 33 m at t2= 13s its average velocity is
A. 6 m s-1
B. 2.45 m s-1
C. 2.25 m s-1
D. 4.45 m s-1
8 When a body is moving on a surface, the force of friction is called
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction
9 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
10 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

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