Dual Nature Of Light Question 518
Question: If the potential difference applied across X-ray tube is V volts, then approximately minimum wavelength of the emitted X-rays will be [MP PET 2002; RPMT 1995; CBSE PMT 1996]
Options:
A) $ \frac{1227}{\sqrt{V}}{AA} $
B) $ \frac{1240}{V}{AA} $
C) $ \frac{2400}{V}{AA} $
D) $ \frac{12400}{V}{AA} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ {\lambda_{\min }}=\frac{hc}{eV}=\frac{6.6{{\times }^{-34}}\times 3\times 10^{8}}{1.6\times {{10}^{-19}}V} $ $ =\frac{12375}{V}\approx \frac{12400}{V}{AA} $
BETA
