" The distance of a star from the earth is 8.33 light minutes " Explain the distance in metre.
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Explanation:
The distance of star from earth is 8.33 light minute what do you mean by the statement express the distance in metre Ans=1.5× 10^11 m
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The distance of a star from earth is 8.33 light minutes.”
This means that it takes 8.33 minutes for light from the sun to reach earth.
#FINDING DISTANCE FROM THE ABOVE STATEMENT:
We know speed of light =3×10^8
Time taken=8.33min
Speed=distance/time
Distance=speed×time
=3×10^8 m/s × (8.33×60) sec {8.33×60 because we are converting minutes to secounds,since speed of light is in m/s}
=1500×10^8 metres
=1.5×10^8 kilometre
Large distance like these are measured in light year or light minutes.
Light year:distance covered by light in 1 year.
Light minute: distance covered by light in 1 minute.
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