What is the wavelength of a photon having a frequency of 71.6 THz?

So I know 1 THz = 10 to the power of 15 Hz And c= 3 x 10 to the 8th and h= 6.63 x 10 to the -34th

1 answer

So c = f*w.
f = frequency in Hz
w = wavelength in m
c is speed of light in m/s