Dual Nature Of Light Question 223

Question: Energy of a quanta of frequency $ 10^{15} $ Hz and $ h=6.6\times {{10}^{-34}}J\text{-}\sec $ will be [RPMT 1997]

Options:

A) $ 6.6\times {{10}^{-19}}J $

B) $ 6.6\times {{10}^{-12}}J $

C) $ 6.6\times {{10}^{-49}}J $

D) $ 6.6\times {{10}^{-41}}J $

Show Answer

Answer:

Correct Answer: A

Solution:

$ E=h\nu =6.6\times {{10}^{-34}}\times 10^{15}=6.6\times {{10}^{-19}}J $