Dual Nature Of Light Question 52

Question: The kinetic energy of an electron which is accelerated through a potential of 100 volts is [MP PET 1986; CBSE PMT 1997; AIIMS 1998]

Options:

A) $ 1.602\times {{10}^{-17}}J $

B) 418.6 calories

C) $ 1.16\times 10^{4}K $

D) $ 6.626\times {{10}^{-34}} $ W- sec

Show Answer

Answer:

Correct Answer: A

Solution:

$ K=Q.V=1.6\times {{10}^{-19}}\times 100=1.6\times {{10}^{-17}}Joules $