Step 1: Understanding the Concept:
A light-year is a unit of astronomical distance. It is defined as the total distance that a beam of light, moving in a vacuum, travels in one Julian year (365.25 days). It is a unit of distance, not time.
Step 2: Key Formula or Approach:
The distance can be calculated using the formula:
Step 3: Detailed Explanation:
The values needed for the calculation are:
\begin{itemize} \item Speed of light in vacuum ( ) \item Time ( ) = 1 Julian year = 365.25 days
\end{itemize}
First, we need to convert the time from years to seconds:
Now, calculate the distance:
In scientific notation, this is approximately:
Step 4: Final Answer:
One light-year is equal to approximately 9.46 x 10 meters. This matches option (A).