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

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

Question # 2

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 3

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 4

Velocity of a body changes if

Question # 5

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

Question # 6

The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as

Question # 7

The displacement coincides with the path of the motion when a body moves is a

Question # 8

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

Question # 9

When two protons are brought closer potential energy of both of them:

Question # 10

The dimension of linear inertia is:

Question # 11

Inertia mass and gravitational mass are

Question # 12

Newton published laws of motion in his famous book "principia" in

Question # 13

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

Question # 14

If the objects of different masses move with the same velocity, then it is more difficult to stop the

Question # 15

A change in position of a body from its initial position to its final position is known as

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If a ball comes back to its starting point after bouncing off the wall several times, then its
A. total displacement is zero
B. average velocity is zero
C. none of them
D. both of them
2 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
3 Distance covered by a freely falling body in 2 sec will be
A. 4.9 m
B. 19.6 m
C. 29.2 m
D. 44.1 m
4 A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?
A. 60 km/hr
B. 80 km/hr
C. 120 km/hr
D. 180 km/hr
5 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec
6 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
7 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
8 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
9 Newton's laws are adequate for speeds that are
A. low compared with the speed of light
B. equal to the speed of light
C. greater than the speed of light
D. all of them
10 Ethanol (alcohol) as a type of:
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these

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