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Light-year is a unit of-

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Light-year is a unit of-
1. Temperature
2. Length
3. Mass
4. Time
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Correct Answer - Option 2 : Length

The correct answer is option 2) i.e. Length

CONCEPT:

  • Length is a measure of the size or distance between two points. The SI unit of length is the meter (m).
  • Light year: It is the distance travelled by light in one year. 
    • A light-year is a convenient unit of measurement of large distances.
    • Generally, a light-year is used to represent astronomical distances. 
    • One light-year is approximately 9 trillion (9 × 1012) km.

EXPLANATION:

  • A light-year is a unit of length.
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