How many photons of lights having a wave length of `5000 A` are necessary to provide `1` Joule of energy?

How many photons of light with a wave length of 4000 pm are necessary to provide one joule of energy?

How many photons of light with a wave length of 4000 pm are necessary to provide one joule of energy?

How many photons of light with a wave length of 400 pm are necessary to provide on joule of energy ?

The photons of light having a wavelength 4000 Å are necessary to provide 1.00 J of energy are.

Number of photons of light with a wave length of 4000 pm necessary to provide one joule of energy approximately x xx 10^(16) . Then r is ______

How many photons having wavelength 4557 Å are needed to provide 1 Joule of energy ?

Calculate the number of photon of light with a wavelength of 6000 Å that provide I joule of energy.

what is the number of photons of light with a wavelength of 4000 pm that provide 1 J of energy ?