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

A mass of 5kg moves with an acceleration of 10m s-2force applied is

Question # 2

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

Question # 3

Essential characteristic of equilibrium is

Question # 4

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

Question # 5

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 6

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 7

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 8

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

Question # 9

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

Question # 10

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 11

A body moving with uniform velocity has

Question # 12

Ethanol (alcohol) as a type of:

Question # 13

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 14

Earth is considered to be

Question # 15

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:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
2 Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be
A. 5 N
B. 10 N
C. 15 N
D. 20 N
3 Swimming becomes possible because of______law of motion.
A. First
B. Second
C. Third
D. None of these
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 An inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0
C. a < 0
D. all of them
6 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
A. 3 s
B. 5 s
C. 7 s
D. 9 s
7 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
8 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
9 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant
10 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work

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