Calculate the wavelength of a photon in Angstroms having an energy of 1 electron-volt.

What is the wavelength of a photon of energy 1 eV?

Calculate the wavelength of a photon emitted when an electron in H- atom maker a transition from n=2 to n=1

Calculate the wavelength in Angstroms of the photon that is emitted when an electron in the Bohr's orbit, n = 2 returns to the orbit, n = 1 in the hydrogen atom. The ionisation potential of the ground state hydrogen atom is 2.17 x 10^(-11) erg per atom.

Calculate the momentum of a photon of light of wavelength 500nm .

Calculate the wavelength, wave number and frequency of photon having its energy 5 electron volt.

calculate the mass of a photon with wavelength 3.6 A

Calculate the energy of photon of light having frequency of 2.7×10^13 s^(−1)

If m is the mass of an electron and c the speed of light, the ratio of the wavelength of a photon of energy E to that of the electron of the same energy is

If the energy of the photon is (2 lambda_(p)mc)/(h) times the kinetic energy of the electron then show then the wavelength lambda of photon and the de Broglie wavelength of an electron have the same value (Where m, c and h have their usual meanings .)

The momentum of a photon having energy equal to the rest energy of an electron is