X- rays are produced in an X- rays tube operating at a given accelerating voltage . The wavelength of the continuous X- rays has values from

Options

A. (a)`0` to `oo`
B. (b)`lambda_("min")` to `oo` where `lambda_("min") gt 0`
C. (c)`0` to `lambda_("max")` where `lambda_("max") lt oo`
D. (d)`lambda_("min")` to `lambda_("max")` where `0 lt lambda_("min") lt lambda_("min") lt oo`

Answer

B

Explanation

The continuous X-ray specturm is shown in figure.

All wavelength `gt lambda_("min")` are found,
where `lambda_("min")=12375/("V(in volt)") Å`
Hence, V is the applied voltage.