Physics
Who among the following is credited to work for the unification of electricity, magnetism and optics field of Physics?

Haris Christian Oersted
James Clerk Maxwell
Michael Faraday
Isaac Newton

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Physics
We always see the same face of the moon, because

It takes equal time for revolution around the earth and rotation on its own axis
It is smaller than the earth
It revolves on its axis in adirection opposite to that ofthe earth
It rotates at the same speed as the earth around the sun

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