As a new star evolves from cool dust and gas to a hot star,the peak wavelength of its spectrum of emitted electromagnetic radiation will:
A) change from the infrared to the visible wavelengths.
B) change from the ultraviolet to the visible range.
C) increase from the visible to infrared wavelengths.
D) remain the same.

Question

Quizplus · Accepted Answer

As a star evolves and heats up, its peak wavelength shifts from longer wavelengths (infrared) to shorter wavelengths (visible) according to Wien's Law.

As a New Star Evolves from Cool Dust and Gas