To determine the frequency, we will use the equation: E = hv
Where
E is the energy of the packet
h is Planck’s constant
v is the frequency
since we know E and h, we have to rearrange the equation to solve for the frequency, so it would look like v = E/h
so plugging in our values:
v = E/h
= 5 x 10^-24 J / 6.626 x 10 ^-34 J/s
= 8 x 10^9 Hz