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

Acceleration in a body is always produced in the directin of:

Question # 2

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

Question # 3

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 4

The product of force and time is called change in:

Question # 5

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

Question # 6

The linear momentum of the body is defined as

Question # 7

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

Question # 8

For a fixed force, larger is the mass of a body the

Question # 9

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

Question # 10

A typical rocket ejects the burnt gases at speeds over

Question # 11

The direction of the acceleration is the same as that of

Question # 12

Acceleration produced in a body by a force varies

Question # 13

A rocket carries its own fuel in the form of

Question # 14

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 15

The quantity F x t is called as

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is
A. 3,600 N
B. 7,200 N
C. 10,000 N
D. 100,000 N
3 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
4 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
5 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs
6 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
7 The vertical and horizontal range will be equal id angle of projection is
A. 76°
B. 45°
C. 60°
D. 120°
8 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
9 When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is
A. zero
B. negative
C. positive
D. non-existing
10 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these

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