Physics
What is the unit of the physical quantity "Jerk"?

Meter second
Meter per second square
Meter per second cube
Meter per second

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Physics
The blue colour of water in the sea is due to

Absorption of other colours except blue by water molecules
Reflection of blue sky by sea water
Reflection of blue light by impurities in sea water
Scattering of blue light by water molecules

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Physics
In a conductor

The forbidden energy gap is very narrow
The forbidden energy gap is very wide
The valence band and the conduction band overlap each other
There is no conduction band

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Physics
Negative feedback in amplifiers

Decreases bandwidth and decreases noise
Increases bandwidth and decreases noise
Decreases bandwidth and increases noise
Increases bandwidth and increases noise

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