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Question

Question: The penetrating power of X-rays increases with the....

The penetrating power of X-rays increases with the.

A

Increase in its velocity

B

Increase in its frequency

C

Increase in its intensity

D

Decrease in its velocity

Answer

Increase in its frequency

Explanation

Solution

Et=P=hνt\frac{E}{t} = P = \frac{h\nu}{t}

i.e. Penetrating power ∝ energy ∝ Frequency.