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NDA2017General AbilityGeneral StudiesActual

Light year is a measure of

Options

  1. Atime
  2. Bdistance
  3. Ctotal amount of light falling on the Earth in a year
  4. Daverage intensity of light falling on the Earth in a year

Correct answer

B. distance

Step-by-step solution

The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union, a light-year is the distance that light travels in vacuum in one Julian year.

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