Question # 1

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

Resistance tolerance of silver band is.

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10%

6%

7%

5%

Photo diode is used for detection of.

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Heat

Magnet

Current

Light

___ is correct relation.

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IT = 10^-4G

IT = 10⁴ G

IT = 10² G

IT = 10^-2 G

The material whose resistivity becomes zero below a certain temperature

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Conductors

Semi conductors

Super conductors

Insulators

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

Energy band theory is based upon

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Hund's Rule

Heisenberg uncertainty principle

Bohr's atomic Model

Wave mechanical model

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

Light emitting diodes are made from semiconductors.

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Silicon

Germanium

Carbon

Gallium arsenide

A photon while passing thorugh a magnetic field are deflected towards:

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North pole

South pole

Are ionized

None of these

An electric field cannot deflect

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X-rays

a-particles

ß-particles

None of these

Both xenon and caesium each have:

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41 isotopes

36 isotopes

43 isotopes

33 isotopes

Absorbed Dose 'D' is defined as

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m/E

E/C

C/m

E/m

Radius of first Bohr's orbit is.

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0.053 nm

0.053 mm

0.053 micro meter

0.053 m

The ratio of applies stress to volumetric strain is called:

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Young modulus

Shear modulus

Bulk modulus

Tensile modulus

A transistor has:

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Two regions

Three regions

Single regions

Four regions

Kx -Xrays are produced due to transition of electron from.

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K to L shell

L to K shell

M to K shell

M to L shell

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