ECAT Pre General Science Physics Chapter 3 MCQ Test With Answer

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

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 2

The product of force and time is called change in:

Question # 3

Acceleration of a body is negative if the velocity of the body is

Question # 4

Unit of impulse in

Question # 5

In the expression F x t, the force F is

Question # 6

The time rate of change of displacement is called:

Question # 7

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

Question # 8

The short distance between two points direction from its initial point to final point is called:

Question # 9

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

Question # 10

The entity which measures the quantity of motion in a body is called

Question # 11

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

Question # 12

A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be

Question # 13

Swimming becomes possible because of______law of motion.

Question # 14

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 15

A typical rocket consists of fuel

Question # 16

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

Question # 17

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

Question # 18

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?

Question # 19

The decrease in velocity per unit time is called:

Question # 20

A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?

Question # 21

A 5 kg mass is falling freely, the force acting on, it will be

Question # 22

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 23

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 24

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

Question # 25

If the objects of different masses move with the same velocity, then it is more difficult to stop the

Question # 26

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 27

The direction of the acceleration is the same as that of

Question # 28

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

Question # 29

The product of force and time is called

Question # 30

For a fixed force, larger is the mass of a body the

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them
2 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
3 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
4 When brakes are applied to a fast moving car, the passengers will be thrown:
A. Forward
B. Backward
C. Downward
D. None of these
5 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
A. To fall vertically down
B. To fall at an angle going from west to east
C. To fall at an angle going from east to west
D. The information given is insufficient to decide the direction of rain
6 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve
7 When a bicycle is in motion but not pedaled, the force of friction exerted by the ground on the two wheels is such that it acts
A. In the backward direction on the front wheel and in the forward direction on the rear wheel
B. In the forwards directions on the front wheel and in the backward direction on the rear wheel
C. In the forward direction on both the wheels
D. In the backward direction on both the wheels
8 The path followed by the projectile is known as:
A. Cycle
B. Hyperbola
C. Trajectory
D. Route
9 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
10 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle

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