ECAT Pre General Science Physics Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:

Question # 2

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 3

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 4

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 5

If the acceleration of a body is not uniform, then velocity-time graph will be:

Question # 6

At the top of the trajectory of a projectile the acceleration is

Question # 7

Angular momentum

Question # 8

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 9

The path (or trajectory) described by a projectile is

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

The vertical and horizontal range will be equal id angle of projection is

Question # 12

A 5 kg mass is falling freely, the force acting on, it will be

Question # 13

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 14

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 # 15

A body moving with uniform velocity has

Question # 16

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 17

Ethanol (alcohol) is a type of:

Question # 18

The second law gives the relationship between

Question # 19

The path described by a projectile is called its

Question # 20

The time rate of change of displacement is called:

Question # 21

The collision in which KE is conserved but momentum is not conserved is called:

Question # 22

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 23

The linear momentum of the body is defined as

Question # 24

Newton's laws are adequate for speeds that are

Question # 25

The mass of the object is a quantities measure of its

Question # 26

Inertia mass and gravitational mass are

Question # 27

Root out of the conventional source of energy:

Question # 28

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

Question # 29

Acceleration produced in a body by the force varies

Question # 30

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 What must be changing when a body is accelerating uniformly?
A. the force acting on a body
B. the velocity of the body
C. the mass of the body
D. the speed of the body
2 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
A. 37.5 km/h
B. 10 km/h
C. 42 km/h
D. 40 km/h
3 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
4 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
5 Distance covered by a freely failing body n the first second of its motion will be:
A. 4.9 m
B. 9.8 m
C. 19.6 m
D. 29.4 m
6 The slopes of the tangent at any point on the curve gives the value of the
A. average velocity at that point
B. instantaneous velocity at that point
C. average acceleration at that point
D. instantaneous acceleration at that point
7 A body of weight 1 N has a kinetic energy of 1 joule when its speed is:
A. 1.46 m sec-1
B. 2.44 m sec-1
C. 3.42 m sec-1
D. 4.43 m sec-1
8 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
9 The dimension of linear inertia is:
A. MLT2
B. ML0T-2
C. ML0T0
D. MLT-1
10 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity

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