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 mass of the object is a quantities measure of its

Question # 2

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 3

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 4

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

Question # 5

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

Question # 6

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 # 7

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

Question # 8

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

Question # 9

Slope of velocity-time graph represents:

Question # 10

A stone is dropped from rest from the top of a tower 19.6 m high. The distance traveled during the last second of its fall is (giving g=9.8 m/ss)

Question # 11

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 12

Body which falls freely under gravity provides good example of motion under:

Question # 13

Which of the following four statements is false?

Question # 14

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 15

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 The entity which measures the quantity of motion in a body is called
A. force
B. energy
C. momentum
D. power
3 A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?
A. 0.1 m/s
B. 10 m/s
C. 1 m/s
D. 0.01 m/s
4 The vertical and horizontal range will be equal id angle of projection is
A. 76°
B. 45°
C. 60°
D. 120°
5 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only
6 For maximum linear distance of travel, a projectile must be fired at an angle of
A. 0°
B. 45°
C. 90°
D. 60°
7 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
8 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
9 Bodies which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
10 The time of flight of a projectile motion equal to
A. half of the time to reach maximum height
B. twice the time to reach maximum height
C. one fourth of time to reach maximum height
D. time to reach maximum height

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