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

Question # 2

Bodies failing freely under gravity provide good example of motion under

Question # 3

Which of the following is not a projectile

Question # 4

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 5

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

Question # 6

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 7

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 8

A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?

Question # 9

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Question # 10

Flight of rocket in the space is an example of

Question # 11

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 12

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 13

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Question # 14

Acceleration of a body is positive, if the velocity of the body is

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A. Zero
B. g
C. -g
D. V + g
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 A typical rocket consumes about
A. 100 kg s-1of fuel
B. 1000 kg s-1of fuel
C. 10000 kg s-1of fuel
D. 100000 kg s-1of fuel
4 In equation F=ma, then mass 'm' is
A. rest mass
B. variable mass
C. inertial mass
D. gravitational mass
5 Which one of the following is dimensionless.
A. Acceleration
B. Velocity
C. Density
D. Angle
6 An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow
A. a circular path
B. a straight line
C. a hyperbola
D. a parabola
7 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
8 An inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0
C. a < 0
D. all of them
9 If the velocity time graph is a straight line parallel to the time-axis, then it means:
A. The body is moving with uniform velocity
B. The body is moving with uniform acceleration
C. The body is at rest
D. None of these
10 Earth is considered to be
A. a non-inertial frame
B. an inertial frame
C. an accelerated frame
D. none of the above

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