`K_(alpha) and K_(beta)` X-rays are emitted when there is a transition of electron between the levels

Options

A. n=2 to n=1 and n=3 to n=1, respectively
B. n=2 to n=1 and n=3 to n=2, respectively
C. n=3 to n=2 and n=4 to n=2, respectively
D. n=3 to n=2 and n=4 to n=3, respectively

Answer

A

Explanation

Specific charge=Charge/Mass.
The positive rays are steam of positive ions. The mass of positive ion is much more than that of electrons, hence specific charge of positive ions is less.