Assertion :Stationary waves are so called because particles are at rest in stationary waves. Reason: They are formed by the superposition of two identical waves travelling in opposite directions.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Stationary waves are called so, because wave velocity is zero. The individual particles are in motion, and the entire stationary wave is in the same phase.
They are formed by the superposition of two identical waves travelling in opposite directions.
Hence assertion is incorrect, reason is correct. D option.

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