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Physics

Physics
The substance which conducts current in the solid state is

Sodium chloride
Diamond
Graphite
Iodine

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Physics
One watt-hour is equivalent to

6.3 x 103 J
6.3 x 10-7 J
3.6 x 10-3 J
3.6 x 103 J

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Physics
A galvanometer can be converted to a voltmeter by connecting

A high resistance in series
A low resistance in series
A high resistance in parallel
A low resistance in parallel

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Physics
Optical fibre works on the

interference
total internal reflection
scattering
principle of refraction

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Physics
Addition of suitable impurities into semiconductor, is called

Doping
Diluting
Forming
Mixing

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Physics
At what temperature (in degree Celsius), the numerical values on Celsius and Fahrenheit scales become equal?

40
273
–273
–40

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