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

Tick the conservative force:

Question # 2

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

Question # 3

Earth is considered to be

Question # 4

If the values of instantaneous and average velocities are equal, the body is said to be moving with

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Which one of the following is dimensionless:

Question # 9

A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

Question # 10

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 # 11

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 # 12

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Question # 13

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 # 14

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

Question # 15

The shortest distance between two points directed from its initial point to final point is called:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 When two protons are brought closer potential energy of both of them:
A. Increases
B. Decreases
C. Remains same
D. None of these
2 The slopes of the tangent at any point on the curve gives the value of the
A. average velocity at that point
B. instantaneous velocity at that point
C. average acceleration at that point
D. instantaneous acceleration at that point
3 If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of
A. 20 m
B. 400 m
C. 1440 m
D. 2880 m
4 Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2
A. 0.064 m
B. 640 cm
C. 64 cm
D. 64 m
5 A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is
A. 60 kg wt
B. 72 kg wt
C. 48 kg wt
D. Zero
6 Inertia mass and gravitational mass are
A. opposite
B. identical
C. identical when there is no friction
D. all of them
7 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
8 In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is
A. 8
B. 4
C. 6
D. 7
9 In the above figures, tell which set is graphs shows that a body is moving uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (i) and (iii)
D. (ii) and (iv)
10 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work

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