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The intensity of gamma radiation from a ...

The intensity of gamma radiation from a given source is `I`
On passing through `36 mm` of lead , it is reduced to `(1)/(8)` . The thickness of lead which will reduce the intensity to `(1)/(2)` will be

A

6 mm

B

9 mm

C

18 mm

D

12 mm

Text Solution

Verified by Experts

The correct Answer is:
D
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