Dual Nature Of Light Question 72
Question: An electron is accelerated through a p.d. of 45.5 volt. The velocity acquired by it is (in ms-1) [AIIMS 2004]
Options:
A) $ 4\times 10^{6} $
B) $ 4\times 10^{4} $
C) $ 10^{6} $
D) Zero
Show Answer
Answer:
Correct Answer: A
Solution:
$ v=\sqrt{\frac{2eV}{m}}=\sqrt{\frac{2\times 1.6\times {{10}^{-19}}\times 45.5}{9.1\times {{10}^{-31}}}} $ $ =,4\times 10^{6},m/s $
BETA
