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Physics

Physics
Rainbow is seen after rain because of hanging molecules of water which act as

Slabs
Lenses
Prisms
Mirrors

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Physics
According to special theory of relativity the mass of a particle

Is independent of its velocity.
Increases with increase in velocity with respect to an observer.
Decreases with increase in velocity.
Decreases with decrease in velocity.

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Physics
Wollen clothes keep the body warm because

Wool increases the temperature of the body
Wool is a bad conductor
Wool rejects heat from the outer objects
Wool absorbs radiant heat from outer objects

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Physics
Remote-sensing device has an inbuilt source of

G-ray
Infrared ray
Ultraviolet ray
X-ray

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Physics
The increasing order of the refractive index of certain materials is (left to right) ________

Rock Salt, Ice, Benzene, Kerosene
Rocksalt, Benzene, Kerosene, Ice
Ice, Kerosene, Benzene, Rock Salt
Kerosene, Ice, Benzene, Rock Salt

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Physics
Solids which conduct electricity at higher temperature but not at lower temperature are called

Super-conductor
Metallic-conductor
Insulator
Semi-conductor

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MORE MCQ ON Physics

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