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

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

Question # 2

The product of force and time is called

Question # 3

What must be changing when a body is accelerating uniformly?

Question # 4

A rocket carries its own fuel in the form of

Question # 5

An inertial frame of reference is that frame of reference in which

Question # 6

The velocity of a projectile is maximum

Question # 7

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 8

The shortest distance between two points directed from its initial point to final point is called:

Question # 9

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

Question # 10

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

Question # 11

Flight of rocket in the space is an example of

Question # 12

Swimming becomes possible because of______law of motion.

Question # 13

Rate of change of momentum is called

Question # 14

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Question # 15


Swimming becomes possible because of______law of motion:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is
A. Mg
B. 1/2 Mg
C. Zero
D. 2 Mg
2 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
3 The motion in a plane is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 A the top of the trajectory of a projectile, the directions of its velocity and acceleration are
A. Perpendicular to each other
B. Parallel to each other
C. Inclined to each other at an angle of 45°
D. Anitparallel to each other
5 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
6 A mass of 5kg moves with an acceleration of 10m s-2force applied is
A. 10N
B. 50N
C. 2N
D. 20N
7 Angular momentum
A. Scalar
B. Axial vector
C. Polar vector
D. At 45° angle
8 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
9 Acceleration in a body is always produced in the directin of:
A. Velocity
B. Weight
C. Force
D. Botha B and C
10 The decrease in velocity per unit time is called
A. deceleration
B. acceleration
C. uniform acceleration
D. variable acceleration

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