State whether given statement is True or False
Light waves require no medium for their propagation.

True

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False

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Solution

The correct option is A True
Light needs no medium to travel. Light or any other form of electromagnetic radiation travels by swapping energy back and forth between electric and magnetic fields, and no medium is needed for either. The speed of light in space is the same everywhere, just less than $300, 000 k m p e r s e c o n d$ , and because it is constant it is used as the ultimate standard of both time and distance.
Hence, the statement is True.

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Three statements regarding the propagation of sound waves.

I Sound waves propagate through a series of crests and troughs.

II Sound waves require a material medium for their propagation.

III The propagation of sound waves is attributed to the motion of particles.

Among the given statements,

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