A light-year is defined as the distance that light travels in vacuum in one Julian year (365.25 days). It is used to measure very large distances, particularly in astronomy.
Consider the following statements about Light year : Light year is a unit for measurement of very large distances. Light year is a unit for measurement of very large time intervals. Light year is a unit for measurement of intensity of light. Which of the statements given above is/are correct ?
Asked in UPSC NDA 1 2021 · Topic: Measurement/Unit (Non-SI Units (e.g., Astronomical Unit, Light-Year, Electron-Volt))
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