# Answers and Solutions

Question: From quasar light takes about 3 billion years to reach the surface of the earth. Calculate the distance of quasar from the earth in light years

Posted by: Vanlalchhuansanga on 08.07.2022

As 1 light year is the distance travelled by light in vacuum in one year therefore distance of quasar from earth is 3× 10^ 9 light years
As 1 light year is the distance travelled by light in vacuum in one year therefore distance of quasar from earth is 3× 10^ 9 light years

Answer: As it takes 3 billion years for light to reach the earth from quasar, it means the distance between quasar and earth is 3 billion light years.

Further light travels a distance of 9.461*10^12 kms in a light year.So the distance between quasar and earth is 9.461*10^12 * 3*10^9 =  2.8383 * 10^22 Kms

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