Dual Nature Of Light Question 255

Question: The spectrum of radiation $ 1.0\times 10^{14}Hz $ is in the infrared region. The energy of one photon of this in joules will be [MP PET 1982]

Options:

A) $ 6.62\times {{10}^{-48}} $

B) $ 6.62\times {{10}^{-20}} $

C) $ \frac{6.62}{3}\times {{10}^{-28}} $

D) $ 3\times 6.62\times {{10}^{-28}} $

Show Answer

Answer:

Correct Answer: B

Solution:

$ E=h\nu =6.64\times {{10}^{-34}}\times 1.0\times 10^{14} $ $ =6.62\times {{10}^{-20}}J $