1.

Find the minimum wavelngth of `X` - ray emitted by `X` - ray tube , which is operating at `15 kV` accelerating voltage.A. `0.75 Å`B. `0.82 Å`C. `1.42 Å`D. `1.13 Å`

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


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