A metre-long tube open at one end, with a movable piston at the other end, shows resonance with a fixed frequency source (a tuning fork of frequency 340Hz ) when the tube length is 25.5cm or 79.3cm. Estimate the speed of sound in air at the temperature of the experiment. The edge effects amy be neglected.

Explanation

To estimate the speed of sound in air given the conditions of the problem, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Lengths of the Tube**:
- The tube has two lengths where resonance occurs:
- \( L_1 = 25.5 \, \text{cm} = 0.255 \, \text{m} \)
- \( L_2 = 79.3 \, \text{cm} = 0.793 \, \text{m} \)
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