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28 June, 19:12

Choose the list below that properly arranges the order of spectra classes (from hottest to coldest)

Select one:

a. T, L, M, K, G, F, A, B, O

b. O, B, G, A, M, K, F, L, T

c. O, B, A, F, G, K, M, L, T

d. A, B, F, G, K, L, M, O, T

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  1. 28 June, 19:42
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    c. O, B, A, F, G, K, M, L, T

    Explanation:

    The class and the temperature range are as follows -

    Class The temperature range -

    O ≥ 30,000 K

    B 10,000-30,000 K

    A 7,500-10,000 K

    F 6,000-7,500 K

    G 5,200-6,000 K

    K 3,700-5,200 K

    M 2,400-3,700 K

    The the order of the stars which can be arranged as per the spectrum is given below -

    O, B, A, F, G, K, M, L, T
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