Three stars—A, B

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

Three stars—A, B, and C—are modeled as perfect blackbodies. Their spectra peak at wavelengths of 400 nm, 500 nm, and 700 nm, respectively. Their radii are 0.5 R⊙0.5\,R_{\odot}, 1.0 R⊙1.0\,R_{\odot}, and 1.5 R⊙1.5\,R_{\odot}, respectively. Rank the stars’ luminosities (total power radiated) from greatest to least. (a) A>B>CA>B>C (b) C>B>AC>B>A (c) B>A>CB>A>C (d) B>C>AB>C>A

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