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

When a body is moving on a surface, the force of friction is called

Question # 2

When the surfaces are coated with a lubricant, then they

Question # 3

The quantity F x t is called as

Question # 4

In equation F=ma, then mass 'm' is

Question # 5

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

Question # 6

In the expression F x t, the force F is

Question # 7

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 8

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

Question # 9

The projectile attains maximum horizontal range when it is projected at an angle of

Question # 10

The decrease in velocity per unit time is called

Question # 11

Which quantity has the same dimension as that of impulse?

Question # 12

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

Question # 13

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 14

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

Question # 15

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 16

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

Question # 17

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

Question # 18

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

Question # 19

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 20

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

Question # 21

Laws of motion are not valid in a system which is

Question # 22

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

Question # 23

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 24

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

Question # 25

Velocity is a

Question # 26

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

Question # 27

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Question # 28

Tick the conservation force:

Question # 29

Newton published laws of motion in his famous book "principia" in

Question # 30

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?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
2 If the values of instantaneous and average velocities are equal, the body is said to be moving with
A. uniform acceleration
B. uniform speed
C. variable velocity
D. uniform velocity
3 During the projectile motion, the horizontal component of velocity
A. changes with time
B. remains constant
C. becomes zero
D. decreases with time
4 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
5 Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is
A. 45°
B. 60°
C. 50°
D. 40°
6 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
7 A body moving with uniform velocity has
A. positive acceleration
B. negative acceleration
C. infinite acceleration
D. zero acceleration
8 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
9
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these
10 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS

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