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

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

Question # 2

Swimming becomes possible because of______law of motion.

Question # 3

The artillery shells travel along parabolic paths under the influence of

Question # 4

The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is

Question # 5

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

Question # 6

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

Question # 7

The SI units of momentum is

Question # 8

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

Question # 9

A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

Question # 10

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

Question # 11

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

Question # 12

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 13

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

Question # 14

A typical rocket ejects the burnt gases at speeds over

Question # 15

The path followed by the projectile is known as:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A non-inertial frame of reference is that frame of reference in which
A. a = 0
B. a > 0 or a < 0
C. v = 0
D. none of them
2 A ball is dropped vertically down and it takes time t to reach the ground. At time t/2
A. The ball had covered exactly half the distance
B. The velocity of the ball was V/3 where V is the velocity when it reached the ground
C. The ball had covered less than half the distance
D. The ball had covered more than half the distance
3 An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called
A. a rocket
B. an aeroplane
C. a projectile
D. a ballon
4 Force is a:
A. Scalar quantity
B. Base quantity
C. Derived quantity
D. None of these
5 Ethanol (alcohol) as a type of:
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
6 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4
C. 12.6
D. None of these
7 A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is
A. Moving forward and gaining speed
B. Moving forward and losing speed
C. Moving forward with uniform speed
D. Moving backward with uniform speed
8 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
9 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
10 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work

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