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

Which one of the following is dimensionless:

Question # 2

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 3

Earth is considered to be

Question # 4

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 5

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

Question # 6

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 7

The direction of the linear momentum is the direction of

Question # 8

The vertical component of velocity of a projectile during its motion is minimum

Question # 9

Body which falls freely under gravity provides good example of motion under:

Question # 10

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

Question # 11

If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?

Question # 12

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

Question # 13

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

Question # 14

When body moves with increasing acceleration, its velocity time graph is a

Question # 15

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Which of the following statements for an object in equilibrium is not true?
A. The object must be at rest
B. The object can be at rest
C. The object is moving at constant speed
D. The acceleration of the object is zero
2 If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:
A. Force
B. Energy
C. work
D. impulse
3 A the top of the trajectory of a projectile, the directions of its velocity and acceleration are
A. Perpendicular to each other
B. Parallel to each other
C. Inclined to each other at an angle of 45°
D. Anitparallel to each other
4 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
5 A mass of 5kg moves with an acceleration of 10m s-2force applied is
A. 10N
B. 50N
C. 2N
D. 20N
6 The shortest distance between two points directed from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
7 The vertical and horizontal range will be equal id angle of projection is
A. 76°
B. 45°
C. 60°
D. 120°
8 A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when
A. Elevator is stationary
B. Elevator cable breaks and it falls freely towards earth
C. Elevator accelerates downwards
D. Elevator accelerates upward
9 When a shall explodes a mid-air, the total momentum of its fragments is
A. less than the momentum of shell
B. equal to the momentum of shell
C. greater than the momentum of shell
D. none of them
10 The three equation of motions are useful only for
A. linear motion with increasing acceleration
B. line motion with uniform acceleration
C. linear motion with zero acceleration
D. linear motion with varying acceleration

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