Dual Nature Of Light Question 495
Question: An X-ray tube operates on 30 kV. What is the minimum wavelength emitted $ (h=6.6\times {{10}^{-34}} $ Js, $ e=1.6\times {{10}^{-19}} $ Coulomb, $ c=3\times 10^{8} $ ms?1) [MP PMT 1995; DPMT 2001, 03]
Options:
A) 0.133 Å
B) 0.4 Å
C) 1.2 Å
D) 6.6 Å
Show Answer
Answer:
Correct Answer: B
Solution:
$ {\lambda_{\min }}=\frac{12375}{V}=\frac{12375}{30\times 10^{3}}=0.4{\AA} $
BETA
