Find the photon energy for electromagnetic waves of wavelength `20m.` Given `h= 6.63xx10^(-34) "Js".`

Find the energy fo photon in watt-hour for electromagentic waves of wavelength 3000 Å. Given h=6.6 xx 10^(-34) "Js".

Calculate the energy of the photon of wave-length 4500A. Given h= 6.6xx10^(-34) J sec.

Find the photon energy in (i) calories (ii) watt hour (iii) electron volt, for e.m. wave of wavelength 300 mu m . Give, h=6.6xx10^-34Js.

The energy of photon of reddish light having wavelength 660nm is ( h=6.6xx10^(-34)Js )

The number of photons emitted per second by a 60 W source of monochromatic light of wavelength 663 nm is (h= 6.63xx10^(-34) Js)

The number of photons emitted per second by a 60 watt source of monochromatic light of wavelength 663 nm is (h=6.63xx10^(-34)Js)