The distance of a star from the earth is 8.33 light
minutes. What do you mean by this statement
Express the distance in metre.
Answers
Answer:
Explanation:
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=8.33 mins
Speed=distance/time
Distance=speed×time
=3×10^8 m/s × (8.33×60) sec {8.33×60 because we are converting minutes to seconds,since speed of light is in m/s}
=1500×10^8 metres
=1.5×10^8 kilometres
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.
Hey there!
The statement 'The distance of a star from the earth is 8.33 light minutes' means that the light from the star takes 8.33 minutes to reach earth.
Given,
Speed of light = 3 * 10^8 m/s
Distance covered in 1 sec = 3 * 10^8
Time taken = 8.33 min = 8.33 * 60 s
Distance = speed * time = 3 * 10^8 * 8.33 * 60 = 1.5 * 10^11 m
Hope It Helps You!