NEET PhysicsClass 12Particle nature of light: the photonMediumSingle correct

A red laser of wavelength 660 nm delivers a beam of power 3.0 mW. About how many photons does it emit per second? (h = 6.63 × 10⁻³⁴ J s, c = 3.0 × 10⁸ m s⁻¹.)

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A red laser of wavelength 660 nm delivers a beam of power 3.0 mW. About how many photons does it emit per second? (h = 6.63 × 10⁻³⁴ J s, c = 3.0 × 10⁸ m s⁻¹.)

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