20
QuizMultiple Choice

Nuclear Processes — Test

Question 20 • Physics in the Universe

In which range is the peak wavelength of a star that is much hotter than the Sun most likely to be?

Answer
A
ultraviolet light
B
radio waves
C
infrared radiation
D
microwaves

Explanation

A star’s peak wavelength shifts to shorter wavelengths as its temperature increases (Wien’s law). Since the star is much hotter than the Sun, its peak is likely at a shorter wavelength, in the ultraviolet range, rather than in infrared, microwave, or radio wavelengths.

AI-written and checked against the verified answer.

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