Question # 1

If mass attached to a spring increases then its time period.

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Increases

Decreases

Remains constant

Decreases slightly

A point mass moves through a circular arc of length 'l' and radius 'r' in time 't' what is the angular velocity about the centre of the circle.

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i/rt

r/it

2/rt

rt

If a planet of mass double than that of the earth and radius three times greater than the earth a 10 kg mass on its surface will weight.

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2.2 N

4.4 N

6.7 N

13.2 N

Which of the following pair does not have identical dimensions.

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Energy and torque

Momentum and impulse

Mass and moment of inertia

Energy and work

Conventionally antilock wise torque is taken as.

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Zero

Positive

Infinity

Negative

The SI unit of angular momentum is.

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kg m-1 s

kg m2 s

kg m s-1

kg m2 s-1

Two bullets a and b have masses 1 kg and 12 kg respectively.

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K.E. of B will be twice that of A

K.E. of A will be twice that of B

Both have same K.E.

K.E. of A will be half that of B

A bomb dropped from an aeroplane explodes in air, its total.

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Momentum decreases

Momentum increases

K.E. Increases

K.E. Decreases

In simple harmonic motion it is found that the total energy of a system.

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Is independent of the amplitude

Depends on the amplitude squared

Is independent of the mass

All of these

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

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Half

Constant

Double

One fourth

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

The mass that appears in Newton's second law is known as.

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Rest mass

Gravitational mass

Inertial mass

Weight

Which of the following quantities has a unit that can be expressed in terms of just two different SI Units.

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Area

Charge

Force

Current

The hydrogen filled balloon possesses

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P.E

K.E

Heat energy

Elastic energy

When a body is taken out of the earth's gravitational field, the P.E. with respect to earth is

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Zero

Minimum

Maximum

geothermal

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.

Which of the following physical quantity has different units as compared to others.

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Weight of a body

Tension of a string

Buoyant force

Electromotive force

The term radius of gyration relates to.

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Moment of force

Moment of inertia

Law of gravitation

simple harmonic motion

A physical quantity not directly involved in rotating motion is.

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Moment of inertia

Mass

Angular velocity

Torque

An object at the end of a spring oscillates with SHM of angular frequency 2 rad s-1 What is the period of oscillation.

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0.32 s

0.50 s

0.80 s

3.1 s

A car is travelling on a level highway at at speed of 15 m s-1. A braking force of 3,000 N brings the car to stop in 10 s The mass of the car is.

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1500 kg

2,000 kg

2,500 kg

3,000 kg

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