Q. 83

The speed of light in vaccum is 3 × 108 m/s. Sunlight takes about 8 minutes to reach the earth. Express distance of Sun from Earth in standard form.

Answer :

Given:

Speed of light = 3 × 108 m/s


Time Taken = 8 minutes


= 8 × 60


= 480 seconds


Speed = Distance / Time


Distance = Speed × Time


Distance = (3 × 108) × (480)


= 1.44 × 1011 m


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