Dual Nature Of Light Question 156
Question: The wavelength associated with an electron accelerated through a potential difference of 100 V is nearly [RPMT 2003]
Options:
A) 100 Å
B) 123 Å
C) 1.23 Å
D) 0.123 Å
Show Answer
Answer:
Correct Answer: C
Solution:
$ \lambda =\frac{h}{\sqrt{2mQV}}=\frac{6.6\times {{10}^{-34}}}{\sqrt{2\times 9.1\times {{10}^{-31}}\times 1.6\times {{10}^{-19}}\times 100}} $ $ =1.23,{\AA} $
BETA
