McqMate
| Q. |
A light year is a unit of – |
| A. | time |
| B. | distance |
| C. | speed of light |
| D. | intensity of light |
| Answer» B. distance | |
|
Explanation: As defined by the International. Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year. It is a measure of distance (rather than, as is sometimes misunderstood, a measure of time). |
|
View all MCQs in
PhysicsNo comments yet