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

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

Question # 2

The artillery shells travel along parabolic paths under the influence of

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Root out of the conventional source of energy:

Question # 7

The motion of a projectile is

Question # 8

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

Question # 9

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:

Question # 10

Work done along a closed path in a gravitational force is:

Question # 11

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)

Question # 12

The three equation of motions are useful only for

Question # 13

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Question # 14

The product of force and time is called change in:

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Newton's laws are adequate for speeds that are
A. low compared with the speed of light
B. equal to the speed of light
C. greater than the speed of light
D. all of them
2 During the projectile motion, the horizontal component of velocity
A. changes with time
B. remains constant
C. becomes zero
D. decreases with time
3 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
4 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
5 The shortest distance between two points directed from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
6 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
7 The dimension of linear inertia is:
A. MLT2
B. ML0T-2
C. ML0T0
D. MLT-1
8 A body moving with uniform velocity has
A. positive acceleration
B. negative acceleration
C. infinite acceleration
D. zero acceleration
9 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
10 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant

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