Q.46:- Nitrogen laser produces a radiation at a wavelength of 337.1 nm. If the number of photons emitted is 5.6×10²⁴, calculate the power of this laser.

Answer:-

E = Nhν = Nhc/λ = (5.6×10²⁴)×(6.626×10^-34 Js×3.0×10⁸ ms^-1)/337.1×10^-9 m = 3.3×10⁶ J