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 short distance between two points direction from its initial point to final point is called:

Question # 2

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 3

An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then

Question # 4

The decrease in velocity per unit time is called

Question # 5

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 6

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

Question # 7

What must be changing when a body is accelerating uniformly?

Question # 8

In above figures, tell which set of graphs shows that a body is moving with uniform velocity:

Question # 9

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

Question # 10

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 # 11

Unit of impulse in

Question # 12

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

Question # 13

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 14

Force is a:

Question # 15

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
2 When we consider the average velocity of a body, then the body is moving in
A. straight line
B. curved path
C. may be in a straight or curved path
D. none of them
3 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)
4 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
5 A dirty carpet is to be cleaned by heating. This is in according with______law of motion.
A. First
B. Second
C. Third
D. None of these
6 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
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
7 When brakes are applied to a fast moving car, the passenger will be thrown:
A. Forward
B. Backward
C. Downward
D. none of these
8 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
9 The consumption source if energy is:
A. Energy from blomass
B. Hydroelectric energy
C. Geothermal energy
D. None of these
10 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity

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