When a tuning fork (vibrating) is held close to ear, one hears a faint hum. The same (vibrating tuning fork) is held such that its stem is in contact with the table surface, then one hears a loud sound. Explain.

Explanation

To explain the phenomenon of sound produced by a vibrating tuning fork when held close to the ear versus when its stem is in contact with a table surface, we can break down the explanation into the following steps:

### Step-by-Step Solution:

1. **Understanding Sound Production**:
- A tuning fork produces sound when it vibrates. These vibrations create sound waves in the air around it.

2. **Tuning Fork Held Close to Ear**:
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