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Assertion : Soft and hard X-rays differ ...

Assertion : Soft and hard `X`-rays differ in frequency as well as velocity.
Reason : The penetrating power of hard `X`- rays is more than the penetrating power of soft `X`-rays.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

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Soft and hard X-rays differ only in frequency. But both types of X-rays travel with speed of light.
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