Dual Nature Of Light Question 65
Question: The speed of an electron having a wavelength of $ {{10}^{-10}},m $ is [AIIMS 2002]
Options:
A) $ 7.25\times 10^{6},m/s $
B) $ 6.26\times 10^{6},m/s $
C) $ 5.25\times 10^{6},m/s $
D) $ 4.24\times 10^{6},m/s $
Show Answer
Answer:
Correct Answer: A
Solution:
$ v=\frac{p}{m}=\frac{h}{m\lambda }=\frac{6.6\times {{10}^{-34}}}{9.1\times {{10}^{-31}}\times {{10}^{-10}}}=7.25\times 10^{6}\ m/s $
BETA
