Question

light from a star takes 50 second to reach the Earth. If the speed of the light is 3×10^8metre per second find the distance of the star from the Earth​

Answer 1

distance = speed × time

=3×10⁸×50

=150×10⁸

=1.5×10¹⁰

So the distance between the star and the earth is 1.5×10¹⁰m.

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Answer 2

@VIPUN

#hey mate

here is your answer

distance (s)= speed (v) × time(t)

$distance \: {s} \: = 3 \times {10}^{8} \times 50 = 150 \times {10}^{8} = 1.5 \times {10}^{10}$

so the distance (s) between star and planet = 1.5 × 10^10

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