When two photons approach each other, their relative velocity is
A)2c
B)c
C)zero
D)c/2

Aray diagram for a refracted light day is shown. what does the dashed line represent

The dissociation energy of a molecule is the energy required tobreak apart the molecule into its separate atoms. the dissociationenergy for a particular molecule is 5.48 x 10-18 j.suppose that this energy is provided by a single photon. determinethe (a) wavelength and (b) frequency of the photon

Can anybody me with this? ? (picture included.)