Laser light of wavelength `630 nm` incident on a pair of slits produces an interference pattern where bright fringes are separated by `8.1 mm`. Another light produces the interference pattern, where the bright fringes are separated by `7.2 mm`. Calculate the wavelength of second light.

Explanation

To solve the problem step by step, we will use the relationship between the fringe width (β), the wavelength (λ), and the constants involved in the interference pattern.

### Step-by-Step Solution:

1. **Identify Given Values:**
- Wavelength of first light (λ₁) = 630 nm = \(630 \times 10^{-9}\) m
- Fringe width for first light (β₁) = 8.1 mm = \(8.1 \times 10^{-3}\) m
- Fringe width for second light (β₂) = 7.2 mm = \(7.2 \times 10^{-3}\) m
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