Dual Nature Of Light Question 34

Question: An electron (charge = $ 1.6\times {{10}^{-19}}C $ ) is accelerated through a potential of 100,000 V. The energy acquired by the electron is [MP PET 1989]

Options:

A) $ 1.6\times {{10}^{-24}}\ J $

B) $ 1.6\times {{10}^{-14}}\ erg $

C) $ 0.53\times {{10}^{-17}}J $

D) $ 1.6\times {{10}^{-14}}J $

Show Answer

Answer:

Correct Answer: D

Solution:

$ E=eV=1.6\times {{10}^{-19}}\times 10^{5} $ $ =1.6\times {{10}^{-14}}J $