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

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

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

Question # 2

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

Question # 3

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Question # 4

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 # 5

A mass of 5kg moves with an acceleration of 10m s-2force applied 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

Which one of the following is dimensionless:

Question # 8

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Question # 9

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?

Question # 10

The entity which measures the quantity of motion in a body is called

Question # 11

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

Question # 12

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 13

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

Question # 14

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

Question # 15

The path described by a projectile is called its

Question # 16

The artillery shells travel along parabolic paths under the influence of

Question # 17

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 18

Acceleration produced in a body by the force varies

Question # 19

When a shell explodes in mid-air, its fragments fly off in

Question # 20

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

Question # 21

The product of force and time is called change in:

Question # 22

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

Question # 23

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 # 24

The distance covered by a body in unit time is called.

Question # 25

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 26

Acceleration of a body at any particular instant during its motion is known as

Question # 27

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

Question # 28

A particle of mass 0.5 g moving along x-axis is located of x1= 15 m at t1= 5s and x2= 33 m at t2= 13s its average velocity is

Question # 29

The magnitude of the displacement is a line from initial position to final position which is

Question # 30

If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift)

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ECAT Class Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A typical rocket ejects the burnt gases at speeds over
A. 400 ms-1
B. 40000m s-1
C. 40000 ms-1
D. 60000 ms-1
2 The vertical and horizontal range will be equal id angle of projection is
A. 76°
B. 45°
C. 60°
D. 120°
3 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
4 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by
A. The horse on the ground
B. The horse on the cart
C. The ground on the horse
D. The ground on the cart
5 A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
6 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
7 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°
8 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
9 Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
A. The faster one
B. Depends on their mass
C. The slower one
D. Both will reach simultaneously
10 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

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