A monochromatic source of light operation at 200 W emits `4xx10^(20)` photons per second. Find the wavelength of the light `"(in" 10^(-7)m`).

A moncohromatic source of light operating at 200 W emits 4xx10^(20) photons per second. Find the wavelength of the light.

A monochromatic source of light operating at 200W emits 4 xx 10^20 photons per second. Find the wavelength of the light.

A monochromatic source of light operating at 200W emits 4 xx 10^20 photons per second. Find the wavelength of the light.

A monochromatic source of light operating at 200W emits 4*10^(20) photons per second.Find the wavelength of the light nearly

A monochromatic source of light operating at 500W emits 6xx10^(20) photon per second. Find the wavelength of the light used. Use h=6.6xx10^(-34)Js , C=3xx10^8m//s

A monochromatic source of light operating at 200W emits 4xx10^(-20) photons/sec. Find the wavelength of the light . (Given h = 6.63xx10^(-34) Js)

A monochromatic source of light operating 200W emits 4xx10^(20) photons/sec. Find the wavelength of the light. Given h=6.63xx10^(-34)J-S,C=3xx10^8m//s .