Dual Nature Of Light Question 375

Question: An x-ray tube is operating at 30 KV then the minimum wavelength of the x-rays coming out of the tube is -

Options:

A) $ 1.24\overset{o}{\mathop{A}}, $

B) $ 0.413\overset{o}{\mathop{A}}, $

C) $ 124\overset{o}{\mathop{A}}, $

D) $ 0.13\overset{o}{\mathop{A}}, $

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ {\lambda_{\min }}=\frac{12400}{V}\overset{o}{\mathop{A}},=\frac{12400}{30000}=0.413\overset{o}{\mathop{A}}, $