Question # 1

The acceleration due to gravity

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Has the same value everywhere in space

Has the same value every where on the earth

varix with altitude on the earth

Is great her on the moon owing to its smaller diameter

How does heat transfer between objects.

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From cold to hot objects

From hot to cold objects

By electromagnetic radiations

From hotter to hottest objects.

When wind blows in the same direction in which the sound travels, the sound velocity

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Decreases

Increases

Remains unchanged

Becomes zero

Relative permeability is

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The ratio of flux density in a material to that for a vacuum

Very large for paramagnetic materials

small for paramagnetic materials

None of these

For which position, will the maximum blood pressure in the body have the smallest value.

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Standing up right

Sitting relaed

Lying horizontally

Standing on one's head

Electromagnetic waves are produced by

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Charge at rest

Accelerated changes

Heating a conductor

Electroplating

The emission of Beta particle from protonium -218 results in the formation of.

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Protactinium -231

Thorium -232

Astatine -218

Radon -222

Which of the following does not produced an erect image.

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Galilean telescope

Terrestrial telescope

Prism binoculars

Astronomical telescope

Interference effects of light were verified by

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Thomas Young

Newton

Bragg

Huygen

In the experiment of force on a current carrying conductor in a uniform magnetic field the magnitude of force depends upon which factor.

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Force is inversely proportional to current

Force is directly proportional to current

Force is inversely proportional to voltage

Force is directly proportional to voltage

Resonance phenomenon in a vibrating body

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May increase the amplitude

May decrease the amplitude

May not affected the amplitude

All of the above

The time constant of a RL circuit is.

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L/R

LR

R/L

L2/R

Hydrogen bomb is based on

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Controlled chain reaction

Uncontrolled chain reaction

Nuclear fusion

Nuclear fission

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

The actual gas can behave like an ideal gas at

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Low density and high pressure

High density and high pressure

Low density and low pressure

High density and low pressure

The normal adjustment the magnifying power of an astronomical telescope is.

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fe/fo

fo/fe

fo+ fe

fo -fe

The electric current can be defined by its

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Chemical effect

Magnetic effect

Heating effect

All of these

The negative of the potential gradient is

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Potential energy

Electrostatic force

Electric field intensity

Electromotive force

On which factor cut off wavelength of X-rays coming from a Coolidge tube depends upon.

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Target material

Accelerating voltage

Filament temperature

Separation between target and the filament

In n-p-n transistor the current flows in the direction from

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Emitter to base

emitter to collector

Base to emitter

Base to collector

The value of magnetic field strength for parament magnets is.

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Unity

Infinity

Zero

Two

A darling ion amplifier is characterized by

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High voltage and current gain

High input resistance and current gain

High output resistant and current gain

Low input resistance and current gain

Arthur Holly Compton was awarded Nobel prize in.

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1923

1927

1931

1934

The unit of electrochemical potential is.

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J mol-1

volt

J C-1

Mol J-1

An object of placed at the centre of curvature of a concave mirror The image produced by the mirror is located.

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Out beyond the centre of curvature

At the centre of curvature

Between the centre of curvature and the focal point

At the focal point

House hold circuits are mostly

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Wired in sires

Wired in parallel

Made using wires of gold

Made using wires of silver

Velocity of sound in air at a given temperature

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Increases with increase in pressure

Is independent of the pressure

Decreases with increases in density

Increases with increase in density

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

Which of the following is renewable source of energy.

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Oil

Natural gas

Uranium

Sunlight

The point of which the whole weight of the body acts

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zero point

Centre of mass

Centre of gravity

Equilibrium

The mechanical equivalent of heat

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Has the same dimension as heat

Has the same dimension as work

Has the same dimensions as energy

Is dimensionless

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