STANDARDPhysics-Units & Dimensions
STANDARD Physics Measurement of Distance MCQ Question
Type: MCQ-conceptual-Easy
Light year is
A
light emitted by the sun in one year
B
the time taken by light to travel from sun to earth
C
the distance travelled by light in free space in one year
D
the time taken by earth to go once around the sun
Correct Answer
Option C
Detailed Explanation
A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers(km) each second. So in one year, it can travel about 10 trillion km.
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