Two scientists detected the cosmic microwave background radiation at a frequency of 160 GHz. What is the temperature of the universe?
peak wavelength x temperature = 2.898 x 10^-3
c = f x wavelength
The Attempt at a Solution
I calculated the wavelength of the microwave radiation to be 1.875x10^-3m. So the temperature is 1.5456K.
But the answer is 3K... How come??