JEE Main 2019 Physics question
A 2 mW laser operates at wavelength of 500 nm. The number of photons that will be emitted per second is: [Given Planck's constant h = Js, speed of light c = m/s]
Answer: (A)
Solution
s.
A 2 mW laser operates at wavelength of 500 nm. The number of photons that will be emitted per second is: [Given Planck's constant h = Js, speed of light c = m/s]
s.