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 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

Question # 2

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

Question # 3

When a shell explodes in mid-air, its fragments fly off in

Question # 4

A body moving with uniform velocity has

Question # 5

The linear momentum of the body is defined as

Question # 6

Blomass includes:

Question # 7

What must be changing when a body is accelerating uniformly?

Question # 8

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

Question # 9

The motion of a projectile is

Question # 10

At the top of the trajectory of a projectile the acceleration is

Question # 11

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

Question # 12

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 # 13

During the projectile motion, the horizontal component of velocity

Question # 14

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 # 15

Dimensions of velocity are

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
2 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass
3 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
4 The shortest distance between two points directed from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
5 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
6 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
7 Change in momentum is one second called.
A. Impulse
B. Force
C. Energy
D. Work
8 Earth is considered to be
A. a non-inertial frame
B. an inertial frame
C. an accelerated frame
D. none of the above
9 The three equation of motions are useful only for
A. linear motion with increasing acceleration
B. line motion with uniform acceleration
C. linear motion with zero acceleration
D. linear motion with varying acceleration
10 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

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