Nuclear & Quantum Physics E.5 Stellar Properties & Processes (id: 0f179fbfd)

本题目来源于试卷: Nuclear & Quantum Physics E.5 Stellar Properties & Processes，类别为 IB物理学

[单选题]
The luminosity of thehqxt/nm.3p.,jf+ay8j ;r) jl v6ekde qdbq; 63rkb rcav.85qSun is $L_⊙$​. A main sequence star with twice the radius of the sun and twice the temperature of the sun has a luminosity of $L$. What is the ratio of $\frac{L}{⊙​L}​$ ?

A. 4
B. 16
C. 32
D. 64


参考答案:  D


本题详细解析:

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