Question # 1

e.m.f is the conversion of --------------- energy into electrical energy

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Chemical

Solar

Light

None of these

The term invertor is used for.

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NOR gate

XNOR gate

NAND gate

NOT gate

Production of x rays is reverse process of

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Photo electric effect

Compton effect

An nihilation

Pair production

The current through a resistance of 100 Ohm when connecting across a source of 220 V is.

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22000 A

22 A

2.2 A

0.45 A

The solids are classified as

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Polymeric

Amorphous

Crystalline

All of above

The existence of positron in 1928 was predicted by

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Anderson

Dirac

Chadwick

Plank

S.I unit of strength of electric field is

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J/C

C/V

V/C

N/C

To get N-Type the Ge is doped with

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Aluminium

Arsenic

Boron

Indium

A positron is an anti particle of.

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Proton

Electron

Neutron

Photon

Charge on an atom is:

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Positive

Negative

Neutral

None of these

Direct current can not flow through.

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Inductor

Resistor

Transistor

Capacitor

The peak value of alternating current is 5√2 A. The mean square value of current will be:

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5A

2.5A

5√2A

5²

If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor.

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√2

1/√2

2

1/2

An atom can reside in excited state for

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10^-8 second

One second

10^-10 second

More than one second

Which one is pentavalent impurity

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Boron

Gallium

Antimony

Indium

Output resistance of an op amp is

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High

Low

Zero

Equal to input resistance

The Lenz's law is also statement of:

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Law of conservation of mass

Law of conservation of charge

Law of conservation of energy

Law of conservation of momentum

Conversation of only one half of A.C. into D.C. is called.

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Half wave amplification

Wave amplification

Half wave electrification

Half wave rectification

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