ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 3 Motion and Force

Try The 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

During the projectile motion, the horizontal component of velocity

Question # 2

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

Question # 3

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

Question # 4

The artillery shells travel along parabolic paths under the influence of

Question # 5

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

Question # 6

The path followed by the projectile is known as:

Question # 7

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

Question # 8

A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Acceleration in a body is always produced in the directin of:

Question # 13

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

Question # 14

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

Question # 15

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The decrease in velocity per unit time is called:
A. Variable Acceleration
B. Average Acceleration
C. Retardation
D. None of these
2 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
3 What must be changing when a body is accelerating uniformly?
A. the force acting on a body
B. the velocity of the body
C. the mass of the body
D. the speed of the body
4 Acceleration produced in a body by the force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
5 A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of
A. 3 s
B. 5 s
C. 7 s
D. 9 s
6 The consumption of energy by a 1000 watt heter in half an hour is:
A. 5 Kwh
B. 0.5 Kwh
C. 2.5 Kwh
D. 3.2 Kwh
7 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
8 Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same
A. Momentum
B. Kinetic energy
C. Velocity
D. Total energy
9 A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when
A. Elevator is stationary
B. Elevator cable breaks and it falls freely towards earth
C. Elevator accelerates downwards
D. Elevator accelerates upward
10 A the top of the trajectory of a projectile, the directions of its velocity and acceleration are
A. Perpendicular to each other
B. Parallel to each other
C. Inclined to each other at an angle of 45°
D. Anitparallel to each other

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