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 sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

Question # 2

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 # 3

The consumption of energy by a 1000 watt heter in half an hour is:

Question # 4

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 # 5

Distance covered by a freely falling body in 2 sec will be

Question # 6

If d is the displacement of the body in time t, then its average velocity will be

Question # 7

The magnitude of the displacement is a line from initial position to final position which is

Question # 8

During the upward motion of the projectile, the vertical component of velocity.

Question # 9

The three equation of motions are useful only for

Question # 10

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 11

Velocity is a

Question # 12

A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot files at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

Question # 13

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

Question # 14

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

Question # 15

The velocity of a projectile is maximum

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
2 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
3 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
4 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
5 If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm
6 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them
7 If the acceleration of a body is not uniform, then velocity-time graph will be:
A. Curve
B. Straight line
C. Sphere
D. All of these
8 Acceleration in a body is always produced in the directin of:
A. Velocity
B. Weight
C. Force
D. Botha B and C
9 Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
A. The faster one
B. Depends on their mass
C. The slower one
D. Both will reach simultaneously
10 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687

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