Question # 1

The leV =

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1.6x10-19C

1.6x10-11J

1.6x10-19J

1.6x10-11C

All motions are

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Absolute

Uniform

Relative

Variable

An electron miroscope emplys which to one of the following particles?

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Electron ahve a wave nature

Electrons can be focused by an electric field

Electrons can be focused by a magnetic field

All of the above

The X-rays diffraction with crystal was first studied by

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W.H Bragg

W.L. Bragg

Michelson

None of these

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

The particles which do not experience strong force are called.

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Baryons

Hadrons

Mesons

Laptons

Paschen series lies in the

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Far ultraviolet region

Visible region

Ultraviolet region

Inferred region

In Wilson cloud chamber, if tracks are thick, straight and continuous, then particle is

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a-particles

ß-particles

Y-rays

All

Unit (S.I) of temperature coefficient of resistivity of a material is

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K

K^-1

^oC

K^-2

Energy density in an inductor is.

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Directly proportional to magnetic field

Directly proportional to square of magnetic field

Inversely proportional to magnetic field

Inversely proportional to square of magnetic field

An inductor of 1 henry inductance has a reactance 500 ohms, then the frequency required is approximately

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50 Hz

100 Hz

80 Hz

120 Hz

Disintegration of photon on striking a nucleus into an electron and positron is known as.

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Annihilation of matter

Compton effect

Pair production

Photo electric effect

Energy produced due to fission of uranium atom is:

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500MeV

200MeV

700MeV

750MEV

One joule is equal to.

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1.6 x 10¹⁹ eV

1.6 x 10^-19 eV

6.25 x 10^-18 eV

6.25 x 10 ¹⁸ eV

Soft magnetic material is

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Sodium

Steel

Iron

Copper

Production of x rays is reverse process of

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Photo electric effect

Compton effect

An nihilation

Pair production

If D.C. input for step up transformer, the output is

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Zero

High

Low

May be high or low

Compton shift is maximum for scattering angle of photon

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0^o

90^o

180^o

45^o

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