What is the number of photon of light with a wvelengthof 4000 pm that provide 1 J of energy ?

The number of photons of light having wave number 'x' in 10 J of energy source is :

What is the ratio of velocity of light of wavelengths 4000 oversetcircA and 8000 oversetcircA in vacuum?

Calculate the energy of a photon of light having frequency of 6 x 10^15 s-1

Calculate the mass of a photon of sodium light having wavelength 5894 angstrom and velocity 3 (10*8)ms-1.

Which graph shows how the energy E of a photon of light is related to its wavelengths (lamda) ?

The de-Broglie wavelength of a photon is the same as the wavelength of electron, show that kinetic energy of photon is (2mclambda)/h times the kinetic energy of electron, where m is the mass of electron and c is the velocity of light.

An electron and a photon each have a wavelength of 1.00 nm. Find the energy of the photon?

Calculate the energy of a photon of llight having frequency of 2.7 (10*13 ) S-1