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

Velocity of a body changes if

Question # 2

The consumption of energy by a 1000 watt heter in half an hour is:

Question # 3

The motion in a plane is the motion in

Question # 4

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

Question # 5

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

Question # 6

When the total displacement is divided by total time taken, we get:

Question # 7

The decrease in velocity per unit time is called:

Question # 8

Which one of the following is dimensionless.

Question # 9

Velocity is a

Question # 10

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

Question # 11

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 12

Laws of motion are not valid in a system which is

Question # 13

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

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

The projectile attains maximum horizontal range when it is projected at an angle of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
2 Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
3 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
4 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
5 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
6 The direction of the acceleration is the same as that of
A. speed
B. velocity
C. both of them
D. none of them
7 If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of
A. 20 m
B. 400 m
C. 1440 m
D. 2880 m
8 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
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 What must be changing when a body is accelerating uniformly?
A. the force acting on a body
B. the velocity of the body
C. the mass of the body
D. the speed of the body

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