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The intensity of an X-ray beam reduces t...

The intensity of an X-ray beam reduces to `36.8%` of its initial intensity after traversing a gold film of thickness `5xx10^(-3)m`. Its absorption coefficient is

A

`50 m^(-1)`

B

`100 m^(-1)`

C

`150 m^(-1)`

D

`200 m^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`I=I_(0)e^(mux)`
0.368 `I_(0)=I_(0)e^(-mux)` `(e^(-1)=0.368)`
`mu=1//x =200`
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