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

For a moving body, at any instant of time

Question # 2

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be

Question # 3

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 # 4

Force is a:

Question # 5

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

Question # 6

The path (or trajectory) described by a projectile is

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 13

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 14

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

Question # 15

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

Question # 16

In the expression F x t, the force F is

Question # 17

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

Question # 18

Acceleration produced in a body by a force varies

Question # 19

The second law gives the relationship between

Question # 20

Inertia mass and gravitational mass are

Question # 21

The three equation of motions are useful only for

Question # 22

Acceleration of a body at any particular instant during its motion is known as

Question # 23

A stone is dropped from rest from the top of a tower 19.6 m high. The distance traveled during the last second of its fall is (giving g=9.8 m/ss)

Question # 24

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 25

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

Question # 26

The decrease in velocity per unit time is called:

Question # 27

Which of the following is not a projectile

Question # 28

The motion of a body in a straight line is the motion in

Question # 29

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

Question # 30

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:
A. 10 m/sec2
B. 20 m/sec2
C. 30 m/sec2
D. Zero
2 The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to
A. zero
B. maximum
C. minimum
D. infinity
3 The consumption source if energy is:
A. Energy from blomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
4 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
5 Bodies failing freely under gravity provide good example of motion under
A. non-uniform acceleration
B. uniform acceleration
C. variable acceleration
D. increasing acceleration
6 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
7 If the instantaneous velocity of a body does not change. the body is said to be moving with
A. average velocity
B. uniform velocity
C. instantaneous velocity
D. variable velocity
8 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
9 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
10 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice

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