X-ray are produced in an X-ray tube operating at a given accelerating voltage. The wavelength of the continuous X-ray has values from.
(a) `0 to oo`
(b) `lambda_(min) to oo, where lambda_(min) gt 0`
(c ) 0 to `lambda_(max), where lambda_(max) ltoo`
(d) `lambda_(min) ot lambda_(max)`, where `0ltlambda(min) lt lambda_(max) lt oo`

Options

A. `0` to `oo`
B. `lambda_("min")` to `oo` where `lambda_("min") gt 0`
C. `0` to `lambda_("max")` where `lambda_("max") lt oo`
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.