Dual Nature Of Light Question 227
Question: The energy of a photon of light of wavelength 450 nm is [BHU 1997; JIPMER 2000]
Options:
A) $ 4.4\times {{10}^{-19}}J $
B) $ 2.5\times {{10}^{-19}}J $
C) $ 1.25\times {{10}^{-17}}J $
D) $ 2.5\times {{10}^{-17}}J $
Show Answer
Answer:
Correct Answer: A
Solution:
$ E=\frac{hc}{\lambda }=\frac{6.62\times {{10}^{-34}}\times 3\times 10^{8}}{450\times {{10}^{-9}}} $ $ =4.4\times {{10}^{-19}}J $
BETA
