Question # 1

On which parameter internal energy of an ideal gas depends upon.

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Volume

Mass

Pressure

Temperature

Pitch of the sound determines

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Its shrillness

Loudness of sund

Intensity level

Quality of sound

A horizontal force of 15 N accelerates a 4 kg object rom rest along a horizontal surface at a rate of 3 m s-2 At the end of 2 s the objects momentum will be.

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12 kg m s-1

24 kg m s-1

30 kg m s-1

45 kg m s-1

Ebers-Moll model describes the working of a

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BJT

FET

MOSFET

UJT

Binding energy per nucleon is.

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Greatest for heavy nuclei

Least for heavy nuclei

Greatest for light nuclei

Greatest for medium weight nuclei

Air bubble in water shines because of

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Reflection

Refraction

Diffraction

Total internal reflection

The direction of induced emf during electromagnetic induction can be determined by making use of.

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Faraday's law

Ampere;s law

Lenz's law

Laplace law

Most widely used types of gas LASER are

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Neon

Argon ion

Helium

All of these

Hygen's principle states that

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Light travels in straight line

Light travels in electromagetic waves

All points of primary wave front are source of secondary wavelets

Light has dual nature

Why is an oxide coated filament used in vacuum tube.

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It has a longer lime

Irt can with stand high

It emit electrons at low temperature

It reduces the effect of space charge

Periodic motion is a motion.

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Under the influence of an elastic restoring force

That repeats it self in equal intervals of time

Back and forth over the same path

With constant acceleration

The diver spins faster when moment of inertia becomes

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Smaller

Greater

Double

zero

Which of the following is not the SI unit of magnetic flux density.

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Wb m2

N A-1 m-1

Tesla

N mA-1

The special theory of relativity was presented in .

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1905

1909

1911

1919

What is the triple point of water.

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273 .15 K

0 K

100 K

0 oC

Planets move around the sun due to.

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Centrifugal force

Centripetal force

Gravitational pull between them

Frictional force between them

A car is travelling on a level highway at at speed of 15 m s-1. A braking force of 3,000 N brings the car to stop in 10 s The mass of the car is.

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1500 kg

2,000 kg

2,500 kg

3,000 kg

In a galvanometer the enameled copper wire is wound on.

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An insulator

A non magnetic material

A magnetic material

A conductor

The back ground radiation in the atmosphere on the average is

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0.5 Sv per year

1.0 Sv per year

1.5 Sv per year

2.0 Sv per year

Which method of charging is involved in making lightning.

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Induction

Friction

Contact

Convection

What are the dimensions of coefficient of velocity of

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[MLT-1]

[ML-1T-1]

[ML-2T-1]

[MLT-2]

Which of the following statemtents is worng.

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Charge is quantized

Charge is conserved

There is not field near an isolated charge at rest

A moving charge produces both electric and magnetic field.

When a transverse wave is reflected on going from a more dense to a less dense medium.

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There is no phase shift

There is a 180 ^o phase shift

There is a phase shift of 360 ^o

A crest is transformed to a trough

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

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Wavelength

Velocity

Period

Frequency

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

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Attraction of nucleus

Collision with nuclei

Interactions with electrons

Electrostatic repulsion by the nucleus

The power of convex lens is 10 d. At what distance the 3 times larger image is formed.

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9.6 cm

2.3 cm

13.3 cm

17.6 cm

The wave nature of light was proposed by

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Thomas Young

Fresnel

Maxwell

Huygen

What will be excitation energy in the third orbit of hydrogen atom.

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0.66 eV

0.85 eV

1.5 eV

5.4 eV

When using the formula E = h lambda what unit should energy have.

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Joule

Watt second

Newton metre

Electron volt

A perfect back body

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Is a perfect absorber of all radiations

Is a perfect reflector of all radiations

Is a perfect reflector of visible lights radiations

Is a brownish object

Electromagnetic waves are produced by

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Charge at rest

Accelerated changes

Heating a conductor

Electroplating

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