The intensity of X- ray from a coolidge tube is plotted againest wavelength `lambda` as shown in the figure . The minimum wavelength found `lambda_(c)` and the wavelength of the` k_(a)` line is `lambda_(lambda)`, As the accelerating voliage is increase

Answer

A

Explanation

Wevelength `lambda_k` is independent of the accelerating
voltage (V), while the minimum wavelength `lambda_c` is
inversely proportional to V. Therefore, as V is
increased `lambda_k` remains unchanged whereas `lambda_c`
decreases or `lambda_k - lambda_c` will increase.