Question # 1

Gas constant per molecule is called:

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Universal gas constant

Stefen's constant

Boltzmann constant

Gravitation constant

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

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Positive

Negative

Zero

None of these

Tick the conservative force:

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tension in a string

Air resistance

Elastic spring force

Frictional force

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

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ammeter

voltmeter

galvanometer

avo-meter

Centripetal acceleration is also called ________ acceleration

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Tangential

Radial

Angular

None of these

There is no net transfer of energy by particle of medium in

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Longitudinal wave

Transverse wave

Progressive wave

Stationary wave

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

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fluid B

fluid A

both take the same time

not possible to determine from given information

The special theory of relativity is based on the

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one postulate

two postulates

three postulates

four postulates

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

Ohm established a relation between

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voltage and resistance

voltage and charge

voltage and current

voltage resistance and charge

Nowadays, Most of the electric energy is produced by the A.C. generators using:

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Hydal water

Geothermal energy

Solar energy

Biomass

Both (B) and (D)

The typical speed of has working aunt is

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0.1 ms^-1

0.01 ms^-1

0.001 ms^-1

0.025 ms^-1

Newton's laws are suitable, for as compared to velocity of light

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Low speed

Very low speed

Very high speed

None of these

The moment of momentum is called

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Couple

Torque

Angular momentum

Force

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width

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Becomes doubled

Becomes 4 times

Is halved

Remains the same

Which one is ferromagnetic

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Ferries

Cobalt

Nickel

All

The escape velocity of Venus in Kms^-1

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5.28

8.24

10.02

10.4

Whenever a body moves from one position to another, the change in its position is called

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Motion

Displacement

Distance

None of these

A hollow metal sphere of radius 5 cm is change such that the potential on its surface 10 V. the potential at the centre of the sphere is

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Zero

10 volts

The same as that at a point 5 cm away from the surface

The same as that a at point 25 cm away from the surface

What remains constant when the earth revolves around the sun?

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Angular momentum

Linear momentum

Angular kinetic energy

Linear kinetic energy

The minimum number of unequal forces whose vector sum can be zero is

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3

2

1

4

The combination of solenoid and a specimen of iron inside it make a power full magnet called

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Horse shoe magnet

Bar magnet

Electromagnet

10^-10 to 10¹⁸

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