Assertion (A) X-rays are used for studying the structure of crystals...

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Assertion (A) X-rays are used for studying the structure of crystals.
Reason (R) X-rays are electromagnetic waves.

A. Both A are R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option B

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