Astronomical measures: A light-year is a unit of what physical quantity? Definition applies to distances in interstellar/galactic scales. Choose the correct option.
IIT JEE
Physics
Difficulty: Easy
Choose an option
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ATime
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BEnergy
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CDistance
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DLuminous intensity
Answer
Correct Answer: Distance
Explanation
DefinitionLight-year = distance light travels in vacuum in one Julian year.
ReasoningDespite the name, it is a measure of distance, not time.
Final AnswerDistance