Question

An X-ray tube is being operated at $10kV$. The maximum frequency of X-rays produced is: $(h=6.6\times {10}^{-34}{m}^{2}kg/s)$

• A. $2.4\times {10}^{20}Hz$
• B. $2.4\times {10}^{19}Hz$
• C. $2.4\times {10}^{18}Hz$
• D. $2.4\times {10}^{11}Hz$

Answer 1

Answer: (C)

$2.4\times {10}^{18}Hz$

$p.d.\times e=energy=h\nu$

$10\times {10}^3\times 1.6\times {10}^{-19}=6.6\times {10}^{-34}\nu$

$\nu =\frac{{10}^4\times 1.6\times {10}^{-19}}{6.6\times {10}^{-34}}$

$=2.4\times {10}^{18}Hz$