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

The time rate of change of displacement is called:

Question # 2

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 # 3

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

Question # 4

Which quantity has the same units as impulse

Question # 5

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

Question # 6

The direction of the linear momentum is the direction of

Question # 7

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

Question # 8

Ethanol (alcohol) is a type of:

Question # 9

The slopes of the tangent at any point on the curve gives the value of the

Question # 10

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

Question # 11

Change in momentum is one second is called:

Question # 12

Unit of impulse in

Question # 13

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

Question # 14

Ethanol (alcohol) as a type of:

Question # 15

Swimming becomes possible because of______law of motion.

Question # 16

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

Question # 17

Blomass includes:

Question # 18

Work done along a closed path in a gravitational force is:

Question # 19

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

Question # 20

The mass of the object is a quantities measure of its

Question # 21

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

Question # 22

A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:

Question # 23

The SI units of momentum is

Question # 24

Velocity of a body changes if

Question # 25

The decrease in velocity per unit time is called:

Question # 26

Distance covered by a freely failing body n the first second of its motion will be:

Question # 27

When the surfaces are coated with a lubricant, then they

Question # 28

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

Question # 29

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

Question # 30

The product of force and time is called change in:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 According to the law of conservation of linear momentum, the total linear momentum of an isolated system
A. increases
B. decreases with time
C. remains constant
D. none of them
3 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
4 If the velocity time graph is a straight line parallel to the time-axis, then it means:
A. The body is moving with uniform velocity
B. The body is moving with uniform acceleration
C. The body is at rest
D. None of these
5 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
6 The discuss used by athlete has a mass of 1 kg, its weight in newton is
A. 9.8 N
B. 80 N
C. 98 N
D. 100 N
7 When the surfaces are coated with a lubricant, then they
A. Stick to each other
B. Slide upon each other
C. Roll upon each other
D. None of these
8 When a shell explodes in mid-air, its fragments fly off in
A. only one direction
B. in two direction
C. different directions
D. a particular direction
9 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
10 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only

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