Two open organ pipes 80 and 81 cm long found to give 26 beats in 10 sec, when each is sounding its fundamental note. Find the velocity of sound in air.

Explanation

To solve the problem of finding the velocity of sound in air using the information provided about two open organ pipes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Lengths of the Pipes:**
- Length of the first pipe \( L_1 = 80 \, \text{cm} = 0.8 \, \text{m} \)
- Length of the second pipe \( L_2 = 81 \, \text{cm} = 0.81 \, \text{m} \)

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