ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

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

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 2

Inertial frame of references are those frame of references which are moving with

Question # 3

The artillery shells travel along parabolic paths under the influence of

Question # 4

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

Question # 5

Earth is considered to be

Question # 6

If the velocity time graph is a straight line parallel to the time-axis, then it means:

Question # 7

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

Question # 8

The horizontal range of projectile, at a certain place, depends upon

Question # 9

The quantity F x t is called as

Question # 10

The expression F x t is called impulse if the time 't' is

Question # 11

The path (or trajectory) described by a projectile is

Question # 12

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 13

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 14

The motion of a body in a straight line is the motion in

Question # 15

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

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Sr.# Question Answer
1 A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after
A. 10 s
B. 20 s
C. 5 s
D. 40 s
2 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
3 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve
4 Laws of motion are not valid in a system which is
A. inertial
B. non-interial
C. at rest
D. moving with uniform velocity
5 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
6 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
7 In the above figures, tell which set is graphs shows that a body is moving uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)
8 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
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
9 Distance traveled by a body falling from rest in the first, second and third second is in the ration of
A. 1 : 2 : 3
B. 1 : 3 : 5
C. 1 : 4 : 9
D. None of the above
10 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]

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