Question
Two sources of light emit with a power of $200 \mathrm{~W}$. The ratio of number of photons of visible light emitted by each source having wavelengths $300 \mathrm{~nm}$ and $500 \mathrm{~nm}$ respectively, will be :
Two sources of light emit with a power of $200 \mathrm{~W}$. The ratio of number of photons of visible light emitted by each source having wavelengths $300 \mathrm{~nm}$ and $500 \mathrm{~nm}$ respectively, will be :