Dual Nature Of Light Question 159
Question: If the kinetic energy of a free electron doubles, its de-Broglie wavelength changes by the factor [AIEEE 2005]
Options:
A) $ \frac{1}{\sqrt{2}} $
B) $ \sqrt{2} $
C) $ \frac{1}{2} $
D) 2
Show Answer
Answer:
Correct Answer: A
Solution:
$ \lambda =\frac{h}{\sqrt{2mE}} $
Þ $ \lambda \propto \frac{1}{\sqrt{E}} $ .
BETA
