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

Biomass includes:

Question # 2

The decrease in velocity per unit time is called:

Question # 3

The expression F x t is called impulse if the time 't' is

Question # 4

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

Question # 5

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

Question # 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

Question # 7

When the surfaces are coated with a lubricant, then they

Question # 8

In the expression F x t, the force F is

Question # 9

The SI units of momentum is

Question # 10

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 11

The mass of the object is a quantities measure of its

Question # 12

The motion of a projectile is

Question # 13

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 14

The velocity of a body at any instant of its motion is known as

Question # 15

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:
A. First
B. Second
C. Third
D. None of these
2 If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)
A. mg
B. m (g+a)
C. m (g - a)
D. 0
3 When a body is moving on a surface, the force of friction is called
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction
4 A stone is dropped from rest from the top of a tower 19.6 m high. The distance traveled during the last second of its fall is (giving g=9.8 m/ss)
A. 9.8 m
B. 14.7 m
C. 4.9 m
D. 19.6 m
5 When brakes are applied to a fast moving car, the passenger will be thrown:
A. Forward
B. Backward
C. Downward
D. none of these
6 A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
7 Inertia mass and gravitational mass are
A. opposite
B. identical
C. identical when there is no friction
D. all of them
8 A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is
A. 2100 m/s2
B. 1400 m/s2
C. 700 m/s2
D. 400 m/s2
9 For a fixed force, larger is the mass of a body the
A. greater is its acceleration
B. smaller is its acceleration
C. smaller is its weight
D. zero is its acceleration
10 Tick the conservation force:
A. Tension in a string
B. Air resistance string
C. Elastic spring force
D. Frictional force

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