What are the factors that are affected for reflected and transmitted waves when a wave is travelled from `(a)` rarer to denser medium `(b)` denser to rarer medium ?

Explanation

To answer the question about the factors that are affected for reflected and transmitted waves when a wave travels from a rarer to a denser medium and from a denser to a rarer medium, we can break it down into two parts.

### Part (a): From Rarer to Denser Medium

1. **Frequency (f)**:
- **Constant**: The frequency of the wave does not change when it travels from a rarer to a denser medium. This is because frequency is determined by the source of the wave.

2. **Wavelength (λ)**:
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