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

Essential characteristic of equilibrium is

Question # 2

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 3

When we consider the average velocity of a body, then the body is moving in

Question # 4

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

Question # 5

During the projectile motion, the horizontal component of velocity

Question # 6

The direction of the linear momentum is the direction of

Question # 7

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 # 8

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 9

Laws of motion are not valid in a system which is

Question # 10

Tick the conservative force:

Question # 11

The quantity F x t is called as

Question # 12

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

Question # 13

The projectile attains maximum horizontal range when it is projected at an angle of

Question # 14

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

Question # 15

Swimming is based on the principle of

Question # 16

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

Question # 17

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

Question # 18

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Question # 19

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 20

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

Question # 21

The mass of the object is a quantities measure of its

Question # 22

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

Question # 23

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

Question # 24

The dimension of linear inertia is:

Question # 25

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 26

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

Question # 27

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Change in momentum is one second is called:
A. Impulse
B. Force
C. Energy
D. Work
2 Bodies failing freely under gravity provide good example of motion under
A. non-uniform acceleration
B. uniform acceleration
C. variable acceleration
D. increasing acceleration
3 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass
4 Essential characteristic of equilibrium is
A. Momentum equal to zero
B. Acceleration equal to zero
C. Kinetic energy equal to zero
D. Velocity equal to zero
5 The short distance between two points direction from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance
6 If the velocity time graph is a straight line parallel to the time-axis, then it means:
A. The body is moving with uniform velocity
B. The body is moving with uniform acceleration
C. The body is at rest
D. None of these
7 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
8 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
9 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
10 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs

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