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worty [1.4K]
3 years ago
5

Light travels at 3 x 105 km/s (300,000 km or 186,000 miles). How long will it take to get to earth? (A distance of 1.5 x 108 km)

Geography
1 answer:
Vlad1618 [11]3 years ago
8 0

Answer:

Option (4)

Explanation:

Here, Speed of light= 3\times10^5 Km/sec

Distance= 1.5\times10^8 Km

We know that,

Speed=\frac{Distance}{Time}

\implies Time=\frac{Distance}{Speed}

Time=\frac{1.5\times10^8}{3\times 10^5}

=0.5 \times10^3

=500 sec

=8 minutes 20 sec

Hence, the correct answer is option (4) i.e 8 minutes.

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