Dual Nature Of Light Question 508
Question: What kV potential is to be applied on X-ray tube so that minimum wavelength of emitted X-rays may be 1Å ( $ h=6.625\times {{10}^{-34}} $ J-sec) [UPSEAT 1999]
Options:
A) $ 12.42,kV $
B) $ 12.84kV $
C) $ 11.98kV $
D) $ 10.78kV $
Show Answer
Answer:
Correct Answer: A
Solution:
$ {\lambda_{\min }}=\frac{12375}{V}{\AA},\Rightarrow V=\frac{12375}{1}=12375,V $ $ =12.375,kV\approx 12.42,kV $
BETA
