Question

Light year is a unit of

• A. Time
• B. Distance
• C. Light intensity
• D. Mass

Hint:

1 light year $\approx 9.46 \times 10^{12}$ kilometers.

Answer 1

The Correct Option is B

Step 1: Understand the term light year.
A light year is defined as the distance travelled by light in vacuum in one year.
Step 2: Clarify common confusion.
Although the word "year" refers to time, a light year measures how far light travels, not how long it takes.
Step 3: Conclusion.
Hence, a light year is a unit of distance.