Question # 1

Crystalline solids are of.

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Short range order

Long range order

Intermediate range

Plastics

A force of 100 N acts on body of mass 5 kg for 10 s. The velocity of the body will be.

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2 ms -1

20 m s-1

200 ms-1

2.000 m s-1

Which of the following cannot be polarized.

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Ultraviolet rays

Radio waves

T.V waves

Sound waves

A mercury thermometer has

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Low conductivity and low thermal capacity

High conductivity and high thermal capacity

Low conductivity and high thermal capacity

High conductivity and high thermal capacity

The length of Galilean telescope is given by

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fo + fe

fo- fe

1/fo - 1/fe

1/fo = 1/fe

Which of the given geometries will result in the largest convection consfficient.

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Vertical plate

Diagonal plate

horizontal plate facing upwards

Horizontal plate facing downwards

The action and reaction forces

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Must act upon the same body

Must act upon different bodies

Must be equal in magnitude but need not have the same line of action.

Different speed at the different height during ascent and during descent.

A body of mass 2 kg is suspended in a elevator by means of a spring The balance reads its weight when the elevator moves up with an acceleration of 5 m s-2 as.

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9.8 N

29. 6 N

26.5 N

30.5 N

On reflection of light from a source there occurs a change in

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Wavelength

Velocity

Period

Frequency

The eight most common element in the universe by mass is

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Ge

C

Si

As

if the line of action of force passes through the axis of rotation of origin, then torque is.

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Maximum

Negative

Zero

1

Wave mechanics was introduced by

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G.P. Thomson

De-Broglie

Heisenberg

Max Planck

Which of the following has the highest relative biological effectiveness or the quality factor.

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X rays and Gama rays

Electrons

Photons

Alpha particles

If a charged body is moved against the electric field it will gain.

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P.E

K.E.

Electrical P.E.

Gravitational energy

The wave nature of light was proposed by

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Thomas Young

Fresnel

Maxwell

Huygen

If the current in a wire which is placed perpendicular to a magnetic fields increases the force on the wire.

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Increases

Decreases

Remain the same

Will be zero

The extension produced in a sample of material depends upon

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Nature of the material

Stretching force

Cross range order

All of the above

In the free expansion of a perfect gas there is no.

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work done

Heat exchnged

Internal energy changed

All of the above

Which is the famous standard model of the universe.

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the big bang

Casmos

Astronaut

The small stap

Which characteristics successively increases in the musical scale.

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Pitch

Quality

Loudness

Amplitude

The minimum amount of energy in an individual electron has to gain to escape from a particular surface is called.

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Threshold frequency

work function

Wave number

Kinetic energy

Which of the following is more viscous

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Air

Honey

Water

Milk

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

Capacitance is define das

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VC

Q/V

QV

V/Q

The velocity at which laminar flow changes to turbulent flow is called.

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Terminal velocity

Escape velocity

Critical velocity

Uniform velocity

The velocity of light was determined accurately by

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Newton

Huygen

Michelson

Young

During transition, atom cannot emit

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Visible light

Ultraviolet radiation

Infrared radiations

gama rays

Electric Heater operates on the principle of.

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electromagnetism

Electromagnetic induction

Electrolysis

Momentum

The possible values of principal quantum number are.

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only zero

0,1,2,...................7

1,2,3........................8

2,3,4,6...............10

What will be the frequency it an employ vessel is filled with water.

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Increases

Decreases

Remain unchanged

Fundamental

When a platinum wire is heated of 1600^oC, it becomes

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orange

Cherry red

Dull red

White

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