Q.

One light year is equal to -

A. 9.46x 10⁻¹7m
B. 9.46x 10¹7m
C. 9.46x 10⁻¹³m
D. 9.46x 10¹³m
Answer» B. 9.46x 10¹7m
Explanation: A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year.
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