Saved Bookmarks
| 1. |
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 isA. `0.06 cm^(2)//g`B. `0.462 cm^(-1)`C. `0.21 cm^(-1)`D. `0.040 cm^(2)//g` |
|
Answer» Correct Answer - B `l_(2)=l_(0)(1-e^(-mux)) l=(l_(0))/(2), x=1.5 cm^(-1)` `mu = 0.462 cm^(2)lg` |
|