What is the wavelength, in meters, of radiation that has a frequency of 5.11x10 raised to11 s-1?

Question

What is the wavelength, in meters, of radiation that has a frequency of 5.11x10 raised to11 s-1?

Answer 1

v= f / (lambda)

v = c = 299 792 458 m / s

f = 5.11*10^11 s-1

lamda = 5.86*10^-4 m

Answer 2

If we assume that the radiation is propagating in a vacuum and is travelling at c. Then

wavelength =  299 792 458 / 5.11E11

= 0.000586678 metres

Answer 3

Wavelength = speed/frequency

= (3 * 10^8)/(5.11 * 10^11) m

= 3/5.11 * 10^-3 m

= 0.587 * 10^-3 m

= 0.587 mm