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

Acceleration produced in a body by a force varies

Question # 2

A body whose momentum is constant must have constant

Question # 3

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

Question # 4

Tick the conservation force:

Question # 5

Rate of change of momentum is called

Question # 6

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 7

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

Question # 8

The SI units of momentum is

Question # 9

A typical rocket consumes about

Question # 10

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

Question # 11

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

Question # 12

The distance covered by a body in unit time is called.

Question # 13

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

Question # 14

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

Question # 15

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 16

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 # 17

An inertial frame of reference is that frame of reference in which

Question # 18

Velocity is a

Question # 19

The second law gives the relationship between

Question # 20

Flight of rocket in the space is an example of

Question # 21

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 22

A non-inertial frame of reference is that frame of reference in which

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 projectile motion is composed of

Question # 25

Newton's first law is also called:

Question # 26

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Question # 27

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

Question # 28

Bodies failing freely under gravity provide good example of motion under

Question # 29

The dimension of linear inertia is:

Question # 30

Inertial frame of references are those frame of references which are moving with

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?
A. 1 x 106
B. 2 x 106
C. 2 x 105
D. 1 x 105
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 Acceleration in a body is always produced in the direction of :
A. Velocity
B. Weight
C. Force
D. Both B and C
4 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
5 If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be
A. Unequal
B. Exactly equal
C. Roughly equal
D. Zero
6 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
7 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
8 When a person jumps off the ground, the reaction force of the ground is
A. greater than the weight of the person
B. smaller than the weight of the person
C. equal to the weight of the person
D. zero
9 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
10 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

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