Question

A light-year is a unit of

• A. distance
• B. time
• C. energy
• D. mass

Answer 1

The correct option is A distance

The Light-year is a unit of length used to express astronomical distances and is equivalent to about $9.46$ trillion kilometres $(9.46\times {10}^{12}\text{km})$ or $5.88$ trillion miles $(5.88\times {10}^{12}\text{mi})$.