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

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

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

Question # 2

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 3

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

Question # 4

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 # 5

The shortest distance between two points directed from its initial point to final point is called:

Question # 6

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 7

The magnitude of the displacement is a line from initial position to final position which is

Question # 8

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 9

The artillery shells travel along parabolic paths under the influence of

Question # 10

Which of the following statements for an object in equilibrium is not true?

Question # 11

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 12

The product of force and time is called change in:

Question # 13

The displacement coincides with the path of the motion when a body moves is a

Question # 14

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 15

When a force is applied on a body, several effects are possible Which of the following effect could not occur?

Question # 16

A rocket carries its own fuel in the form of

Question # 17

Ethanol (alcohol) is a type of:

Question # 18

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 # 19

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 20

The direction of velocity is along the direction of

Question # 21

The mass of the object is a quantities measure of its

Question # 22

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

Question # 23

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

Question # 24

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

Question # 25

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

Question # 26

Swimming is based on the principle of

Question # 27

Swimming becomes possible because of______law of motion.

Question # 28

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 29

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

Question # 30

The path (or trajectory) described by a projectile is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
2 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
3 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
4 A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is
A. 24/13
B. 10/3
C. 3
D. 4,8
5 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work
6 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
7 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
8 For a fixed force, larger is the mass of a body the
A. greater is its acceleration
B. smaller is its acceleration
C. smaller is its weight
D. zero is its acceleration
9 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
10 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°

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