Question # 1

Wavelength of a wave for closed pipe having length 'l' in the fundamental mode is.

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2 l

1/2

4 l

l

Inertia may expressed in

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Kg

Newton

Watt

Joule

The branch of physics which deals with the properties of gravitational field, electromagnetic field and nuclear field is called.

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Aerodynamics

Field theory

Acorestics

Hydrodynamics

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

The increase in thermal pollution of environment means.

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Increase in the entropy

Decrease in the entropy

Entropy remains constant

Entropy becomes zero

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

The pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

The numer of significant figureswith the increases accracy of the measuring instrument

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Decreases

Remains unchanged

Increasees

None of these

For 0.0036 no. of significnat digits

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1

3

2

4

The first person who attempted to measure the speed of light was.

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Michelson

Hygen's

Galileo

Ability

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

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