Dual Nature Of Light Question 151
Question: The kinetic energy of an electron with de-Broglie wavelength of 0.3 nanometer is [UPSEAT 2004]
Options:
A) 0.168 eV
B) 16.8 eV
C) 1.68 eV
D) 2.5 eV
Show Answer
Answer:
Correct Answer: B
Solution:
$ =5.469\times {{10}^{-10}}m=5.47{\AA} $ $ \lambda =\frac{h}{|p|}=\frac{h}{|I|} $ $ =2.65\times {{10}^{-18}}J $ $ =16.8,eV $
BETA
