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

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

Question # 2

The motion of a projectile is

Question # 3

Which quantity has the same units as impulse

Question # 4

Root out the conventional source of energy:

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

Question # 7

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 8

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

Question # 9

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 10

The area under line velocity-time graph is numerically equal to the

Question # 11

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

Question # 12

When a body is moving on a surface, the force of friction is called

Question # 13

The time of flight of a projectile motion equal to

Question # 14

Force is a:

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
3 During the projectile motion, the horizontal component of velocity
A. changes with time
B. remains constant
C. becomes zero
D. decreases with time
4 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
5 If d is the displacement of the body in time t, then its average velocity will be
A. Vav= d x t
B. Vav = t/d
C. Vav = d/t
D. Vav = d/t
6 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°
7 If the instantaneous velocity of a body does not change. the body is said to be moving with
A. average velocity
B. uniform velocity
C. instantaneous velocity
D. variable velocity
8 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
9 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 Kg
B. 3 Kg
C. 4 Kg
D. 8 Kg
10 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

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