define light year based on NCERT class 1 1 textbook
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- the distance that light travels in one year, about 9.4607×1012 kilometres
- प्रकाश वर्ष; एक वर्ष में प्रकाश द्वारा तय की जाने वाली दूरी जो लगभग 9.4607×1012 किलोमीटर होती है
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Explanation:
A light year is a measure of distance and not of time and is equal to the distance travelled by light in one year. It is equal to 9.461 x1012km.
A light-year is a unit of distance. 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 travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.
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