If the light from a star reaches us in 9.6 light minutes, how far is the star from the earth?
Answers
Answered by
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Given:
Light from star reaches us in 9.6 light minutes.
To find:
Distance of star from earth ?
Calculation:
1 light-minute (LM) is the distance travelled by light in one minute :
Now, total distance of star from earth is :
So, distance of star from earth is 1.73 × 10⁸ km.
Answered by
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Answer: 1.728 × 10^11 m
Explanation:
1 light minute= speed of light × 1 min
3 × 10^8 m/s × 60s = 1.80 × 10^10
9.6 light minute = 1.80 × 10^10 × 9.6 = 17.28 × 10^10 m
But change it to a single digit, so we shift the sign and change the exponent:
1.728 × 10^11 m, can also be written as 1.728 × 10^8 km
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