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

Root out of the conventional source of energy:

Question # 2

The motion of a body in a straight line is the motion in

Question # 3

The velocity of a projectile is maximum

Question # 4

Essential characteristic of equilibrium is

Question # 5

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 6

Angular momentum

Question # 7

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 8

The slopes of the tangent at any point on the curve gives the value of the

Question # 9

The horizontal range of projectile, at a certain place, depends upon

Question # 10

Swimming is based on the principle of

Question # 11

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

Question # 12

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

Question # 13

Blomass includes:

Question # 14

Force is a:

Question # 15

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

Question # 16

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 17

Which quantity has the same dimension as that of impulse?

Question # 18

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

Question # 19

In the above figures, tell which set is graphs shows that a body is moving uniform velocity:

Question # 20

Biomass includes:

Question # 21

The second law gives the relationship between

Question # 22

Root out the conventional source of energy:

Question # 23

Force is a:

Question # 24

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

Question # 25

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

Question # 26

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Question # 27

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

Question # 28

An inertial frame of reference is that frame of reference in which

Question # 29

If the velocity time graph is a straight line parallel to the time-axis, then it means:

Question # 30

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:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
2 Dimensions of velocity are
A. [L]
B. [T]
C. [LT-1]
D. [LT-2]
3 Rocket engines lift a rocket from the earth surface, because hot gas with high velocity
A. Push against the air
B. React against the rocket and push it up
C. Heat up the air which lifts the rocket
D. Push against the earth
4 Work done along a closed path in a gravitational force is:
A. maximum
B. Minimum
C. Zero
D. Unity
5 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
6 A typical rocket consumes about
A. 100 kg s-1of fuel
B. 1000 kg s-1of fuel
C. 10000 kg s-1of fuel
D. 100000 kg s-1of fuel
7 A change in position of a body from its initial position to its final position is known as
A. relative motion
B. displacement
C. distance
D. acceleration
8 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
9 In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is
A. Mg
B. 1/2 Mg
C. Zero
D. 2 Mg
10 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

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