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

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 # 2

The velocity of a body at any instant of its motion is known as

Question # 3

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

Question # 4

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

Question # 5

Ethanol (alcohol) is a type of:

Question # 6

Ethanol (alcohol) as a type of:

Question # 7

A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Question # 8

During the upward motion of the projectile, the vertical component of velocity:

Question # 9

Velocity of a body changes if

Question # 10

Work done along a closed path in a gravitational force is:

Question # 11

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

Question # 12

A rocket carries its own fuel in the form of

Question # 13

If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)

Question # 14

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

Question # 15

Inertial frame of references are those frame of references which are moving with

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:
A. Force
B. Energy
C. work
D. impulse
2 Which of the following statements for an object in equilibrium is not true?
A. The object must be at rest
B. The object can be at rest
C. The object is moving at constant speed
D. The acceleration of the object is zero
3 The dimension of linear inertia is:
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
4 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
5 The area under line velocity-time graph is numerically equal to the
A. speed of the body
B. acceleration of the body
C. distance covered by the body
D. none of them
6 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these
7 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
8 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
9 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
10 Which of the following is not a projectile
A. a bullet fired from a gun
B. a space ship
C. a football in air
D. an artillery shell

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