In a Young's double slit set up, the wavelength of light used is 54nm. The distance of screen form slits is 1m. The slit separation is 0.3mm.
(a) Compare the intensity at a point P distant 10mm from the central fringe where the
intensity is `I_0`.
(b) Find the number of bright fringes between P and the central fringe.

Explanation

To solve the problem step by step, we will break it down into two parts as per the question.

### Part (a): Comparing the intensity at point P

1. **Identify the given values:**
- Wavelength, \( \lambda = 54 \, \text{nm} = 54 \times 10^{-9} \, \text{m} \)
- Distance from slits to screen, \( D = 1 \, \text{m} \)
- Slit separation, \( d = 0.3 \, \text{mm} = 0.3 \times 10^{-3} \, \text{m} \)
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