As a human with a temperature of about 310 K,you radiate most strongly at a wavelength of about 10 micrometres.If the dust around a protostar radiates most strongly at 30 micrometres,what is the approximate temperature of that dust?
A)100,000 K
B)10,000 K
C)1000 K
D)100 K

Question

Quizplus · Accepted Answer

The wavelength of peak emission is inversely proportional to temperature (Wien's Law). If the peak wavelength is 30 micrometres, which is three times longer than 10 micrometres, the temperature is about one-third of 310 K, approximately 100 K.

As a Human with a Temperature of About 310 K,you