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

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

Question # 2

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 3

A projectile on its path gets divided into two pieces at its highest point. Which is true?

Question # 4

The dimension of linear inertia is:

Question # 5

In the expression F x t, the force F is

Question # 6

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 7

Acceleration of a body at any particular instant during its motion is known as

Question # 8

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 9

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

Question # 10

Velocity is a

Question # 11

During the projectile motion, the horizontal component of velocity

Question # 12

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 13

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

Question # 14

Root out the conventional source of energy:

Question # 15

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)

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
2 Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
A. The faster one
B. Depends on their mass
C. The slower one
D. Both will reach simultaneously
3 The motion in a plane is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is
A. 60 kg wt
B. 72 kg wt
C. 48 kg wt
D. Zero
5 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
6 Tick the conservation force:
A. Tension in a string
B. Air resistance string
C. Elastic spring force
D. Frictional force
7 For maximum linear distance of travel, a projectile must be fired at an angle of
A. 0°
B. 45°
C. 90°
D. 60°
8 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
A. 1200 m
B. 0.33 km
C. 3.33 km
D. 33 km
9 A non-inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0 or a < 0
C. v = 0
D. none of them
10 The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N

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