Physics
Air pressure is usually highest when the air is

Warm and dry
Warm and moist
Cool and dry
Cool and moist

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Physics
Indicate the false statement about the resistance of a wire

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

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Physics
RADAR is used for:

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

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