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A particular star is at a distance of about `8.1 xx 10^13` km from the Earth. Assuring that light travels at `3 xx 10^8` m per second, find how long does light takes from that star to reach the

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A particular star is at a distance of about `8.1 xx 10^13` km from the Earth. Assuring that light travels at `3 xx 10^8` m per second, find how long does light takes from that star to reach the Earth.

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