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

Root out the conventional source of energy:

Question # 2

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 3

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 # 4

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

Question # 5

Which quantity has the same units as impulse

Question # 6

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

Question # 7

One KWh is equal to:

Question # 8

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 # 9

A body whose momentum is constant must have constant

Question # 10

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

Question # 11

A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?

Question # 12

A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds

Question # 13

The path described by a projectile is called its

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
2 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
3 The mass of the object is a quantities measure of its
A. speed
B. velocity
C. acceleration
D. inertia
4 By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)
A. 58.8 m/s
B. 49 m/s
C. 65 m/s
D. 19.6 m/s
5 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
6 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
7 A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is
A. Moving forward and gaining speed
B. Moving forward and losing speed
C. Moving forward with uniform speed
D. Moving backward with uniform speed
8 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass
9 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
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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