Question

A metal target is bombarded by 10 KeV electron. Most energetic X-ray coming out of it is nearly:

• A. 4 A
• B. 0.31 A
• C. 1.24 A
• D. 300 A

Answer 1

The correct option is A 4 A

A metal taregt is bombard $=10KeV$

$10KeV=10\times {10}^{3}eV\times 1.6\times {10}^{-19}=[10\times {10}^3\times 1.6\times {10}^{-19}]J$

VI$=10\times {10}^3\times 1.6\times {10}^{-19}$

$I=\frac{10\times {10}^3\times 1.6\times {10}^{-19}}{V}$

Where $V=4\times {10}^{-16}V$ for X-ray

$I=4A$