OPSC OAS 2020 PrelimsScience & TechnologyQuestion 7
Solved previous year question from the OPSC OAS/OCS 2020 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
One light year is:
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Answer & Explanation
Correct answer: (A) The distance travelled by light in free space in one year
- A light-year measures the distance that light travels in a vacuum over one year, approximately 9.46 trillion kilometers.
