Question

calculate wavelength,frequency,and wavenumber of a light whose time period is 2.0×10 power -10

Answer 1

frequency =10∧10/2
                 =5×10∧9
wave length =velocity of light /frequency
                    =3×10∧8/5×10∧9
                     =0.06 m
wave number=1/wave length
                      =1/0.06
                      =16.66