ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

The dimension of linear inertia is:

Question # 2

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

Question # 3

Which quantity has the same units as impulse

Question # 4

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 # 5

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 6

Inertia mass and gravitational mass are

Question # 7

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

Question # 8

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 # 9

A cold soft drink is kept on the balance. When the cap is opened, then the weight

Question # 10

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

Question # 11

The second law gives the relationship between

Question # 12

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 13

When the total displacement is divided by total time taken, we get:

Question # 14

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 # 15

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
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 Root out of the conventional source of energy:
A. Energy from biomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
4 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
5 The artillery shells travel along parabolic paths under the influence of
A. magnetic field
B. electric field
C. electromagnetic field
D. gravitational field
6 Newton's first law is also called:
A. Law of torque
B. Law of force
C. Law of inertia
D. None of these
7 A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?
A. 0.1 m/s
B. 10 m/s
C. 1 m/s
D. 0.01 m/s
8 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
9 If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s
10 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs

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