ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

Try The 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

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

Question # 2

For a moving body, at any instant of time

Question # 3

Rate of change of momentum is called

Question # 4

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 5

When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

A typical rocket consumes about

Question # 10

A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Question # 11

A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear

Question # 12

During the upward motion of the projectile, the vertical component of velocity:

Question # 13

A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds

Question # 14

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 15

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
2 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
3 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
4 Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is
A. 45°
B. 60°
C. 50°
D. 40°
5 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
6 If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s
7 Newton's first law is also called:
A. Law of torque
B. Law of force
C. Law of inertia
D. None of these
8 A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is
A. 2100 m/s2
B. 1400 m/s2
C. 700 m/s2
D. 400 m/s2
9 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
10 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them

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