An atom (not a hydrogen atom) absorbs a photon whose connected wavelength is λ1 and immediately emits a photon whose associated wavelength is λ2(with λ1 <λ2). How much net energy is absorbed with the atom in this process? State your answer in terms of the given variables, using h and c if needed. Just need the equation ( Synthetic Notation).
How far apart are two rocks on the moon that can be resolved by a telescope on the earth, whose diameter is 5 m, if the wavelength of the light is 550 nm? (The earth-moon distance is3.84x105km)