To use Wien's law to find the temperature of an object, one needs to know
A) the object's distance.
B) the object's mass.
C) the wavelength in the spectrum of the object at which the intensity is greatest.
D) the frequency of the most energetic photons emitted from the object.

Question

Quizplus · Accepted Answer

Wien's law relates the temperature of an object to the peak wavelength of its emitted spectrum. It states that the peak wavelength is inversely proportional to the temperature, meaning to find the temperature using Wien's law, one needs to know the wavelength at which the object's emission is strongest.

To Use Wien's Law to Find the Temperature of an Object