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14 October, 22:45

What does d represent in the equation below?

m = M + 5 log (d/10)

A. luminosity

B. spectral class

C. diameter of a star

D. distance to a star

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Answers (1)
  1. 15 October, 01:24
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    The correct answer is letter D. distance to a star.

    In astrophysics, M = m - 5 log (d/10)

    where

    m - apparent magnitude

    M - absolute magnitude

    m - apparent magnitude

    d - distance measured in parsec
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