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 two bodies of equal masses moving in the same direction collide elastically, then their velocities.

Question # 2

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

Question # 3

Root out the conventional source of energy:

Question # 4

The path followed by the projectile is known as:

Question # 5

The direction of velocity is along the direction of

Question # 6

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

Question # 7

When a shell explodes in mid-air, its fragments fly off in

Question # 8

Tick the conservation force:

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

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 # 11

The motion of a projectile is

Question # 12

A change in position of a body from its initial position to its final position is known as

Question # 13

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 14

Force is a:

Question # 15

Acceleration of a body is positive, if the velocity of the body is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Tick the conservation force:
A. Tension in a string
B. Air resistance string
C. Elastic spring force
D. Frictional force
2 If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm
3 A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be
A. 40 km/h
B. 48 km/h
C. 50 km/h
D. 60 km/h
4 A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N
5 If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have
A. different values
B. same values
C. zero valves
D. constant valves
6 Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is
A. 22 m
B. 6 m
C. 33 m
D. 7.8 m
7 Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?
A. Their range will be same
B. Their maximum height will be same
C. Their landing velocity will be same
D. Their time of flight will be same
8 A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:
A. 10 m/sec2
B. 20 m/sec2
C. 30 m/sec2
D. Zero
9 If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
10 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
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns

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