Physics
What is the process of conversion of solid state directly to gaseous state called?

Sublimation
Condensation
Evaporation
Distillation

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Physics
RADAR is used for:

locating submerged submarines.
receiving a signals in a radio receiver.
detecting and locating the position of objects such as Aeroplanes.
locating geostationary satellites.

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Physics
Indicate the false statement about the resistance of a wire

It is directly proportional to the length of wire
It is directly proportional to the area of cross-section of wire
Resistance of metallic wire increases with increase in temperature
It depends on material of wire

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