Helium-neon laser light (λ = 6.33 × 10−7 m) is sent through a 0.30 mm-wide single slit. What is the width of the central maximum on a screen 1.0 m from the slit?

The width is

Explanation:

From the question we are told that

   The  wavelength is  

    The  width of the slit is  

    The distance of the screen is  

Generally the central maximum is mathematically represented as

Here  y is the width of the first order maxima which is mathematically represented as

substituting values

So  

cant without the picture! ?