Light of wavelength 6000 Å is incident of a narrow slit. The screen is placed 2 m away from the slit. If the first minima lie 5 mm on either side of the central maximum, calculate the slit width.

Explanation

To solve the problem, we will use the formula for the position of the first minima in single-slit diffraction. The position of the minima is given by the formula:

\[ y = \frac{n \lambda D}{a} \]

where:
- \( y \) is the distance from the central maximum to the first minima,
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