Question

from examining the peak wavelength of the light emitted from a star we can determine the stars _________.
rotation
chemical composition
surface temperature
size
mass

Explanation:

According to Wien's displacement law, the peak - wavelength of the light emitted by a black - body (stars can be approximated as black - bodies) is inversely proportional to its surface temperature. So, by examining the peak wavelength of the light emitted from a star, we can determine its surface temperature.

Answer:

C. surface temperature