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Physics

Physics
Which of the following produces more severe burns ?

Steam
Boiling water
Melting iceberg
Hot water

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Physics
During hot weather, the fan produces a feeling of comfort. This is because

Our perspiration eva-porates rapidly
Fan cools the air
Fan supplies cool air
Conductivity of air increases

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Physics
Mist is caused by

Water vapour at low temperature
Ice at low temperature
Dry ice
Carbon-monoxide in solid form

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Physics
The width of depletion layer of a P-N junction

Increases with heavy doping
Is independent of applied voltage
Is increased under reverse bias
Decreases with light doping

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Physics
The force which makes a vehicle to stop when break is applied is called

Frictional force
Covalant force
Vanderwalls force
Gravitational force

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Physics
Resistance of human body in dry condition

10 ohm
100000 ohm
1000 ohm
10000 ohm

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