Find the minimum wavelngth of `X` - ray emitted by `X` - ray tube , which is operating at `15 kV` accelerating voltage.

Options

A. `0.75 Å`
B. `0.82 Å`
C. `1.42 Å`
D. `1.13 Å`

Answer

B

Explanation

`lambda_(min) = (12400)/(V_((i n v o l t))) = (12400)/( 15 xx 10^(3)) = 0.82 Å`