A 2 mW laser operates at a wavelength of 500 nm. The number of photon – InterviewSolution

1.	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=6.6×10−34 Js, speed of light c=3.0×108 m/s]
Answer» 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 $c = 3.0 \times 10^{8} m/s]$

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