Astronomical Distances and Light Years

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Question 1 of 28

The distance of a galaxy from the earth is of the order of $10^{25}$ m. The time taken by light to reach the earth from the galaxy is

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$3 \times 10^{14}$ s

$3 \times 10^{16}$ s

$3 \times 10^{18}$ s

$3\times10^{20}$ s

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