Answer:
d = 0.22 mm
Explanation:
The phenomenon of interference and diffraction is always present, the latter is the envelope that modulates the process, let's write the equation of each
Interference d sin θ = m λ
Diffraction a sin θ = n λ
Where d is the separation between the slits, a is the width of each, n and m are integers
In general, the most intense diffraction order is the first, so we can do n = 1, divide the two equations
d sin θ/ a sin θ = m λ / λ
d / a = m
They give us the number of interference lines (m = 11), the width of each slit (a = 0.02 mm) and the wavelength (λ = 589.6 nm), let's calculate
d = a m
d = 0.02 11
d = 0.22 mm
