Physics
Who among the following is credited for the Corpuscular theory of light?

Christiaan Hyugens
Albert Einstein
Isaac Newton
James Clerk Maxwell

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Physics
Mirage is due to:

Equal heating of different parts of the atmosphere
Unequal heating of different parts of the atmosphere
Depletion of ozone layer in the atmosphere
Magnetic disturbances in the atmosphere

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Physics
It is easier for a man to swim in sea water, than in river water because

The density of sea water is more than the density of river water
The density of sea water is lesser than the density of river water
The sea is-deeper than the river
The sea is wider than the river

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