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 typical rocket ejects the burnt gases at speeds over

Question # 2

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 3

The area under line velocity-time graph is numerically equal to the

Question # 4

When a person jumps off the ground, the reaction force of the ground is

Question # 5

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 6

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

Question # 7

The motion of a body in a straight line is the motion in

Question # 8

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

Question # 9

The entity which measures the quantity of motion in a body is called

Question # 10

A body whose momentum is constant must have constant

Question # 11

In the expression F x t, the force F is

Question # 12

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

Question # 13

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 14

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 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
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 Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be
A. 5 N
B. 10 N
C. 15 N
D. 20 N
5 A body is thrown from a height h with speed u, it hits the ground with speed V
A. The value of V is maximum if the body is thrown vertically downward
B. The value of V is maximum if the body is thrown vertically upwards
C. The value of V is minimum if the body is thrown horizontally
D. The value of V does not depend on the direction of which it is thrown
6 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle
7 A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
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 A projectile on its path gets divided into two pieces at its highest point. Which is true?
A. Momentum increases
B. Momentum decreases
C. Kinetic energy increases
D. Kinetic energy decreases
10 A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is
A. Moving forward and gaining speed
B. Moving forward and losing speed
C. Moving forward with uniform speed
D. Moving backward with uniform speed

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