Stars a and B Have the Same Radius, but the Spectrum

question 157

Multiple Choice

Stars A and B have the same radius, but the spectrum of star A peaks at a wavelength of 500 nm, whereas star B's spectrum peaks at 1000 nm. What is the ratio of the energy flux leaving the surface of star A to the energy flux leaving the surface of star B?

• A) 1/16
• B) 1/4
• C) 4
• D) 16

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