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Physics

Physics
Which one of the following is an ohmic conductor?

Silicon
Germanium
Carbon
Silver

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Physics
A nuclear reactor is said to have become 'critical' when

It starts emitting dangerous radioactive radiations
It stops due to malfunctioning
It is ready to produce controlled energy
It is shut down to avoid explosion

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Physics
The resistance of a conductor is inversely proportional to its:

Area of cross section
Length
Resistivity
Temperature

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Physics
A television channel is characterised by

Physical dimension of television screen
Velocity of transmitted signal
Frequency of transmitted signal
Size of picture tube

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Physics
One bar is equal to

106 Pa
105 Pa
103 Pa
104 Pa

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Physics
For a ray of light to suffer total internal reflection it has to pass from :

Air to water
Water to glass
Glass to water
Air to glass

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MORE MCQ ON Physics

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