Name the physical quantities which are measured in the following unit
ly

Explanation

To solve the question of identifying the physical quantity measured in the unit "ly," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Unit**: The unit given is "ly," which stands for light year.

2. **Understand the Definition**: A light year is defined as the distance that light travels in a vacuum in one Julian year.

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