Physics
Negative feedback in amplifiers

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

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Physics
The term ''equinox' means

The path which the Earthtakes around the Sun
The axis of the Earth around which it rotates
The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
When the day and night are of equal duration

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Physics
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:

cohesion of mercury is greater than its adhesion with glass.
cohesion of water is greater than its adhesion with glass.
density of mercury is greater than that of water.
mercury is a metal.

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