Question # 1

For rectification we use.

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Transformer

Diode

Choke

Generator

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

Choke consumes extremely small

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Current

Charge

Power

Potential

The negative of the potential gradient is

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Electrostatic force

Electromotive force

Potential difference

Electric field intensity

For computation of electric flux, the surface area should be.

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Parallel

Flat

Curved

Spherical

Grid in cathode ray oscilloscope controls.

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Number of electron

Temperature of filament

Frequency of electron

Energy of electrons

The negative sign with induced emf in Faraday's law is in accordance with

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Lenz's law

Amperes law

Boyle's law

Gauss law

The galvanometer can be made sensitive by making the factor BAN/C

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Large

Small

Constant

Zero

Laser is a beam of light which is

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Monochromatic

Coherent

Unidirectional

All of these

Various types of cancer are treated by

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Carbon -14

Nickel -63

Cobalt -60

Strontium -90

A rheostat can be used as variable resistor as well as a-------------

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Potential divider

Current divider

Wheat stone bridge

Power divider

Commutator was invented by:

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William bills

William Gates

William tells

William Sturgeon

The direction of induced current is always so as to oppose the change which causes the current is:

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Faraday's law

Lenz's law

Ohm's law

Kirchhoff's 1st rule

The SI unit of flux density is.

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NA-1 m2

NA-1 m-1

NAm-1

NA-1 m

Flux through any closed surface is:

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1/ε²_∘ times the total charge enclosed in it

ε²_∘ time the total charge enclosed in it

1/ε_∘ ties the total charge enclosed in ti

ε_∘ time the total charge enclosed in it

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

Heat sensitive resistors are called.

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resistors

Capacitor

Thermistors

Inductors

In frequency modulation which factor changed.

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Amplitude of charge carriers

Frequency of charge carriers

Amplitude of signal

Frequency of signal

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