Question # 1

Pressure of a gas at constant volume is proportion to

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Total energy of gas

Average P.E to molecules

Average K.E of molecules

Total internal energy of gas

When a platinum wire is heated, it appears yellow at

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1600°C

900°C

1100°C

1300°C

If one volt is needed to cause a current of one ampere to flow in a conductor, its resistance is

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one ohm

one joule

one volt

one ampere

The path (or trajectory) described by a projectile is

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a parabola

a hyperbola

a circle

a straight line

Deep water almost runs still when surface water flow in rivers. What does it explains

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Magnus effect

Equation of continuity

Surface energy

Bernoulli's equation

Acceleration produced in a body by the force varies

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inversely as the applied force

directly as the applied force

directly as the mass of the body

none of them

If the velocity time graph is a straight line parallel to the time-axis, then it means:

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The body is moving with uniform velocity

The body is moving with uniform acceleration

The body is at rest

None of these

The expression F x t is called impulse if the time 't' is

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zero

very large

very small

infinite

Angular momentum is a:

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vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

A semi-conductor in its extremely pure form is known as

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extrinsic semi-conductor

intrinsic semi-conductor

either of them

none of them

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

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water contains hydrogen atoms, air does not

water molecules are smaller than molecules in the air

surface tension of the water prevents it from

What makes the hair shaving brush cling together when taken out of water

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Viscosity

Attraction between the hair

Gravity

Surface tension

The moment of linear momentum of a body is called

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Angular momentum

Couple

Impulse

Torque

The difference between 1st ring fringe and 1st dark fringe is measured as

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λD/2d

λD/d

λD/4d

2λD/d

N-kg^-1is the unit of

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Velocity

Force

Acceleration

None of these

If red light is incident on sea water it appears

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Red

Green

Blue

Yellow

The sky appears blue because

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Red light is absorbed

Blue light is scattered the most

Blue light is absorbed

It is its natural color

A bomb of mass 9 kg explodes into two pieces of mass 3 kg and 6 kg.The velocity of mass 3 kg is16 ms^-1,K.E of mass 6 kg is

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96 j

192 j

384 j

768 j

Which of the particles, electron, proton and neutron moving with same speed has longest wave length?

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Electron

Proton

Neutron

All have same

Identify practical use of superconductor

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MRI

Super computer

Magnetic levitation train

All above

One angshom is equal to?

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10^-8cm

10^-6m

10^-10nm

10^-8nm

The isothermal and adiabatic processes are employed in order

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Two isotherm and then two adiabates

Only isothermal one adibate

Only isothermal process

Only adiabatic process

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