Monochromatic light of frequency 6 × 10^14 Hz is produced by a laser. The power emitted is 2 × 10^-3 W. How many photons per second on an average,…

Monochromatic light of frequency $\displaystyle 6 \times 10^{14} \mathrm{~Hz}$ is produced by a laser. The power emitted is $\displaystyle 2 \times 10^{-3} \mathrm{~W}$. How many photons per second on an average, are emitted by the source? (Given $\displaystyle \mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}$ )