Question

What should be the width of each slit to obtain n maxima of double slit
pattern within the central maxima of single slit pattern?​

Answer 1

Answer:

given = n maxima ; a = width of the slit

to find = width of each slit

solution =

         β₀ = 2Dλ / a

         β₀ =  10β

         2Dλ/a = 10 X 5 X 10⁻⁴

                  a = 2 X 1 X 500 X 10⁻⁹/ 10 X 5 X 10⁻⁴

                  a = 0.2mm

                                             OR

        ∴ nλ / d = 2λ/ a

         ∴n  =2d/a