Which stars in this picture are the largest in size (radius)

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Q1. All the stars in this photo are at about the similar distance from Earth (some 26,000 light-years away). Which stars in this picture are the largest in size (radius)?

Q2. Unpolarized light travels throughout 2 linear polarizers. What (minimum) angle should the second polarizer be relative to the first polarizer (the difference between q1 and q2) so that the final intensity of light is 1/3 original value?

Reference no: EM1313729

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