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The intensity of gamma radiation from a given source is I.

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asked Mar 26, 2018 in Physics by paayal (26,720 points) ● 4 ● 6 ● 11

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

(a) 18mm 

(b) 12mm

(c) 6mm 

(d) 9mm

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answered Mar 26, 2018 by sanjaydas (61,430 points) ● 5 ● 7 ● 7
selected Mar 28, 2018 by Vikash Kumar
 
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