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 dimension of linear inertia is:

Question # 2

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 3

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?

Question # 4

If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have

Question # 5

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

Question # 6

The path (or trajectory) described by a projectile is

Question # 7

When a force is applied on a body, several effects are possible Which of the following effect could not occur?

Question # 8

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

Question # 9

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 10

In the expression F x t, the force F is

Question # 11

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

Question # 12

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 13

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

Question # 14

Tick the conservative force:

Question # 15

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 According to the law of conservation of linear momentum, the total linear momentum of an isolated system
A. increases
B. decreases with time
C. remains constant
D. none of them
2 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
3 The velocity of a body at any instant of its motion is known as
A. average velocity
B. instantaneous velocity
C. uniform velocity
D. none of them
4 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
5 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
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 If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?
A. 1 x 106
B. 2 x 106
C. 2 x 105
D. 1 x 105
8 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
9 Blomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
10
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these

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