Question # 1

As a positively charged rod is brought closer and closer to a positively charged electroscope the gold leaf.

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diverges

Converges

is neutralized

Is unaffected

Which thermometer is called sprint thermometer

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Alcohol thermometer

Mercury in glass thermometer

Gas thermometer

Radiation thermometer

Which of the following is a transport optical element with flat polished surfaces that refract light.

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Monocole

Axicon

Prism

Lens

Air bubble in water shines because of

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Reflection

Refraction

Diffraction

Total internal reflection

The exitance of more than one distinct state with the same energy is called.

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Exigency

Degeneracy

Normally

Emergency

A new class of ceramics materials was discovered in.

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1938

1958

1978

1986

Electromagnetic waves transmit.

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Energy only

Momentum only

Energy and momentum

Light

High concentration of red blood cells increases the viscosity of blood from

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2 -3 time's that of water

3-4 times that of water

3 - 5 times that of water

4 -5 times that of water

Which of the following is its own anti particle.

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Photon

Electron

Proton

positron

Which of the following is an example of diamagnetic substances.

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Nickel

Chromium

Antimony

Cobalt

The simple form of particle accelerator is.

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Cathode ray tube

Oscillator

_Amplifier

Phase locked loop

If we make the magnetic field stronger the value of induced emf is.

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Decreased

Increased

Vanished

Kept constant

Which of the following wavelength lies in X-rays region.

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1 A

100 A

1,000 A

10,000 A

Huygen's concept of secondary waves.

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Allow us to find the focal length of a thick lens

Is a geometrical method to find a wave front.

Is used to determine the velocity of light

Is used to explain polarization

Which quantity has dimensions different from the others.

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Energy per unit volume

Force per unit area

Angular momentum per unit mass

Pressure

Which of the following quantity has a unit that can be expressed in terms of just two different SI base units.

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Area

Change

Electric current

Length

Who wrote books on sound and music.

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Galileo

Alkundi

Alberuni

Ibn al Haithem

When a charged particle is moved through a magnetic field if suffers is change in its.

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Charge

energy

Mass

direction of motion

Negative feedback

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Increases stability

Decreases stability

Produces oscillatory

Cannot occur

Which type of amplifier causes minimum drain of power supply.

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Class -A

Class -B

Class-C

Class -AB

The velocity of the wave could be increased by

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Reducing the amplitude

Decreasing the frequency

Increasing the period

Stretching the spring more

At absolute zero of temperature.

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The molecular energy is zero

Molecules have translational K.E

Molecules have rotational K.E.

Molecules have maximum energy

A 10 kg rocket fragment falling towards the earth has a net downward acceleration of 5 ms -2 The net downward force acting on the fragment is

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5 N

10 N

50 N

105 N

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

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Joule

Watt second

Newton metre

Electron volt

It is possible is distinguish between transvers and longitudinal waves from the property of.

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Refraction

Interference

Diffraction

Polarization

At series resonance in L-C-R circuit the impedance is equal to.

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Ohmic resistance

Inductive reactance

Capacitive reactance

Inductive reactance minus capacitive reactance

In case of stationary waves every particle of the medium has fixed

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Velocity

Displacement

Amplitude

Phase

When we pass a radiation from a radioactive material through an electric field.

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All three kinds of rays will be deflected

Only the Gama rays are deflected

The Alpha and Beta particles are deflected

Only the alpha particles are deflected

92.65 is round off as

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92.6

93.00

92.7

None of these

Interference effects of light were verified by

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Thomas Young

Newton

Bragg

Huygen

Which parameter determines the brightness of a light source sensed by an eye.

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Light energy entering the eye

Wavelength of light

Total radiant flux entering the eye

Total luminous flux entering the eye

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