Question

the distance travelled by light in one year is a) 780 million kilometre b) 1420 million kilometre c)9.46 ×1012 km d)1.58 million kilometre

Answer 1

It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travelabout 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.

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Answer 2

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