Dual Nature Of Light Question 192
Question: A 2 mW laser operates at a wavelength of 500 nm. The number of photons that will be emitted per second is : [Given Planck’s constant $ h=6.6\times {{10}^{-34}}Js, $ speed of light $ c=3.0\times 10^{8}m/s $ ]
Solution:
Answer: $ ( 5\times 10^{15} ) $
BETA
