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Lead is a good absorber of X rays. Speci...

Lead is a good absorber of X rays. Specific gravity of `Pb = 11.5`. To cut down the initial radiation `l_(0)` to `(l_(0))/(2)` a shield of `1.5 cm` was used. The mass absorption co-efficient is

A

`0.06 cm^(2)//g`

B

`0.462 cm^(-1)`

C

`0.21 cm^(-1)`

D

`0.040 cm^(2)//g`

Text Solution

Verified by Experts

The correct Answer is:
B
`l_(2)=l_(0)(1-e^(-mux)) l=(l_(0))/(2), x=1.5 cm^(-1)`
`mu = 0.462 cm^(2)lg`
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