Question # 1

If there is no fourth band, tolerance is shows as

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10%

Xc =

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1/2πfc

2πfc

2π/fc

fc/2π

In Compton effect the photon behaves as a.

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Wave

Particle

Nucleon

Both a and b

1 rem =

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0.001 SV

0.01 SV

0.1 SV

1.01 SV

Closeness of the electric field lines is the measure of.

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Direction of field

Strength of field

Potential difference

Uniformity of field

In photovoltaic cell, current is directly proportional to.

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Wavelength of light

Intensity of light

Energy

Frequency of light

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

Which one pair belongs to acceptor impurity.

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Aresincl, phosphorus

Boron, gallium

Arsenic, antimony

Antimony, indium

The place for soring the nuclear waste is

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Ocean

Damping in earth

Damping in desert

Bottom of old salt mines

substance which undergo plastic deformation until they break are known as.

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Brittle substances

Ductile substance

Non magnetic substance

Magnetic substance

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

Black Body radiation spectrum is an example of:

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Atomic spectra

Line spectra

Continuous spectra

None of above

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

Which one belongs to lepton's group

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Electron

Muons

Neutrons

All of these

The radioactive decay obeys the law

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A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, Then

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The charge in the plates reduces and potencial difference increase

Potencial difference between the plates increase, stored energy decreases and charge remains the same

Potencial difference between the plates decreases, stored energy decreases and charge remains unchanged

None of them

The work done is bringing a unit positive charge from infinity to that point in an electric field is called.

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Potential

Potential difference

Absolute potential

All of these

Platinum wire becomes yellow at a temperature of.

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900^oC

1300^oC

1600^oC

500^oC

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