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What are the dimensions of a light year?(a) L(b) T(c) LT^-1(d) MThis question was posed to me during an interview.This is a very interesting question from Dimensional Formulae and Equations in division Units and Measurements of Physics – Class 11

Answer»

The correct answer is (a) L

Easiest explanation: Lightyear is the UNIT of measurement of distance; hence it has the DIMENSIONS of distance. Lightyear is the distance travelled by light in one year. It finds its use mostly in ASTRONOMY.



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