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Physics

Physics
What is the value of 1 kW = ?

1000 W
10000 W
10 W
100 W

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Physics
When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an

Amplifier
Rectifier
Conductor
Oscillator

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Physics
The audio signals of TV are

Frequency modulated
Velocity modulated
Unmodulated
Amplitude modulated

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Physics
Ozone layer in the outer atmosphere helps us in

Regulating the temperature of atmosphere
Absorbing UV radiations
Reflecting radio waves and makes radio communication possible
Absorbing cosmic ray particles

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Physics
Which one of the following is the value of one nanometer?

10-4 cm
10-7 cm
10-6 cm
10-3 cm

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Physics
Rectifiers are used to convert:

Direct current to Alternating current
High voltage to low voltage
Low voltage to high voltage
Alternating current to Direct current

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