ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

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

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

The time rate of change of displacement is called:

Question # 2

One KWh is equal to:

Question # 3

Which quantity has the same dimension as that of impulse?

Question # 4

The quantity F x t is called as

Question # 5

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Question # 6

The time of flight of a projectile motion equal to

Question # 7

Laws of motion are not valid in a system which is

Question # 8

The area under line velocity-time graph is numerically equal to the

Question # 9

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

Question # 10

Bodies failing freely under gravity provide good example of motion under

Question # 11

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

Question # 12

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 # 13

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 # 14

If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 kg
B. 3 kg
C. 4 kg
D. 8 kg
2 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
3 A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A. Zero
B. g
C. -g
D. V + g
4 The magnitude of the displacement is a line from initial position to final position which is
A. straight
B. curved
C. either be curved or straight
D. none of them
5 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
6 A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns
7 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity
8 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
9 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
10 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

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