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

Question # 2

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

Question # 3

The distance covered by a body in unit time is called.

Question # 4

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 5

What must be changing when a body is accelerating uniformly?

Question # 6

Force is a:

Question # 7

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

Question # 8

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 # 9

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 10

In the expression F x t, the force F is

Question # 11

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 12

The product of force and time is called

Question # 13

Velocity of a body changes if

Question # 14

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 15

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 When brakes are applied to a fast moving car, the passengers will be thrown:
A. Forward
B. Backward
C. Downward
D. None of these
3 The product of force and time is called
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
4 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
5 The velocity of a body at any instant of its motion is known as
A. average velocity
B. instantaneous velocity
C. uniform velocity
D. none of them
6 The slopes of the tangent at any point on the curve gives the value of the
A. average velocity at that point
B. instantaneous velocity at that point
C. average acceleration at that point
D. instantaneous acceleration at that point
7 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
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm
8 Ethanol (alcohol) as a type of:
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
9 The distance covered by a body in unit time is called.
A. Displacement
B. speed
C. Velocity
D. Both B and C
10 The displacement coincides with the path of the motion when a body moves is a
A. curved line
B. straight line
C. may be curved or straight
D. none of them

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