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 slopes of the tangent at any point on the curve gives the value of the

Question # 2

A typical rocket ejects the burnt gases at speeds over

Question # 3

The motion of a body in a straight line is the motion in

Question # 4

Angular momentum

Question # 5

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 6

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

Question # 7

Blomass includes:

Question # 8

Swimming becomes possible because of______law of motion.

Question # 9

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

Question # 10

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 # 11

Change in momentum is one second is called:

Question # 12

For a moving body, at any instant of time

Question # 13

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

Question # 14

One KWh is equal to:

Question # 15

Which one of the following is dimensionless:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
3 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
4 A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?
A. Both hit the ground at the same veloctiy
B. Both hit the ground at the same speed
C. The change of velocity during the path for both balls is the same
D. The change of speed during the path for both balls is the same
5 The expression F x t is called impulse if the time 't' is
A. zero
B. very large
C. very small
D. infinite
6 At the top of the trajectory of a projectile the acceleration is
A. The maximum
B. The minimum
C. Zero
D. g
7 A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is
A. 24/13
B. 10/3
C. 3
D. 4,8
8 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
9 A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)
A. 1.0 kg wt
B. 2.0 kg wt
C. 0.5 kg wt
D. Zero
10 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

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