CBSE · Class 11 · Geography · The Origin and Evolution of the EarthWhat is a light-year a measure of?
Step-by-Step Solution
A light-year is a measure of distance, not time. It is the distance that a beam of light travels in one year at the speed of 300,000 km/s.
Detailed Options Breakdown
Option : Time
Incorrect choice. This distractor represents a common misunderstanding of the core principles of The Origin and Evolution of the Earth.
Option 1: Distance (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Speed of light
Incorrect choice. This distractor represents a common misunderstanding of the core principles of The Origin and Evolution of the Earth.
Option 3: Mass of stars
Incorrect choice. This distractor represents a common misunderstanding of the core principles of The Origin and Evolution of the Earth.
💡 Study Guide: This question tests core syllabus concepts from The Origin and Evolution of the Earth. For formulas, key summaries, and mock exam reference guides, read the full The Origin and Evolution of the Earth Revision Notes.