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

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

Question # 2

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 3

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 # 4

Acceleration produced in a body by the force varies

Question # 5

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

Question # 6

One KWh is equal to:

Question # 7

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 8

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Question # 9

A typical rocket consists of fuel

Question # 10

Root out the conventional source of energy:

Question # 11

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 12

Bodies failing freely under gravity provide good example of motion under

Question # 13

The direction of the acceleration is the same as that of

Question # 14

Ethanol (alcohol) as a type of:

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
3 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
4 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?
A. 4.2 m
B. 8.4
C. 12.6
D. None of these
5 The quantity F x t is called as
A. momentum
B. velocity
C. acceleration
D. impulse
6 If the objects of different masses move with the same velocity, then it is more difficult to stop the
A. lighter of the two
B. massive of the two
C. any one of them
D. both of them
7 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:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
8 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
9 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
10 The time rate of change of displacement is called:
A. Time
B. Acceleration
C. Speed
D. Velocity

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