Question # 1

The escape velocity

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Increases with the increase of the mass of the body

Depends on the type of body used

Is independent of mass of the body

Decreases with the increases of the mass of the body

A particle performs SHM of amplitude 0.020 and frequency 2.5 Hz. What is its maximum speed.

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0.050 m s-1

0.125 m s-1

0.314 m s-1

0.75 m s-1

If there are no frictional effects, the mechanical energy of a system executing simple harmonic motion.

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Changes with time

Is variable

Is constant

Is not conserved

The horizontal range is equal for the angles.

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30 ^o and 45 ^o

30 ^oand 60 ^o

45 ^o and 90 ^o

60 ^oand 75 ^o

A field in which the work done in moving a body along the closed path is zero.

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electric field

electromagnetic field

Conservative field

Non conservative field

In any collision between two bodies there need nor the conservation of

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Linear momentum

Angular momentum

Total energy

Kinetic energy

What is the period of geostationary satellite.

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6 hours

12 hours

18 hours

24 hours

If a car is to gain momentum it must.

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Lose inertia

accelerate

Move rapidly

Lose weight

The dimensions of universal gravitational constant G are.

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[MLT-2]

[ML -2T-2]

[M-1L2T-2]

[ML-1T-1]

The moment of linear momentum is equal to

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Implies

Torque

Angular momentum

Couple

Which of the following is not essential for the free oscillations of a mass attached to a spring.

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Elasticity

Gravity

Inertia

Restoring force

The dimensional formula for torque is identical to.

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Kinetic energy

Pressure energy

Moment of force

All of the above

The magnitude of the resultant of two forces may be increased by

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Increasing the angle between them

Decreasing the angle between them

Drawing the parallelogram to represent them

Drawing the force perpendicularly

The centre of gravity of a cylinder is.

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At the intersection of medians

At the centre

At the middle point of axis

At the intersection of diagonals

The force of gravity between two objects does not depend upon the.

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Constant of gravitation

Separation

Product of their masses

Sum of their masses

It the force acting on a body is doubled its acceleration becomes.

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Half

Constant

Double

One fourth

A physical quantity which produces rotation in a body is called.

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Force

Torque

Momentum

accelerate

A stone is whirled in a vertical circle at the and of a string when the stone is at the highest position, tension in the string is

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Maximum

Zero

Equal to weight of the stone

Less than weight of the stone.

A ball is thrown straight up when the ball reaches the highest point.

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Both is velocity and acceleration are zero

In velocity os zero but acceleration is not zero.

It acceleration is zero but velocity is not zero.

Neither velocity nor acceleration is zero.

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

The magnitude of resultant of three forces is 3. Its x -component is 2 and y component is 1, then its z-component will be.

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1

2

3

4

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