Answer:
he correct answers are a, b
Explanation:
In the two-slit interference phenomenon, the expression for interference is
           d sin θ= m λ                       constructive interference
           d sin θ = (m + ½) λ             destructive interference
in general this phenomenon occurs for small angles, for which we can write
            tanθ = y / L
            tan te = sin tea / cos tea = sin tea
            sin θ = y / La
un
derestimate the first two equations.
Let's do the calculation for constructive interference
          d y / L = m λ
the distance between maximum clos is and
          y = (me / d) λ
this is the position of each maximum, the distance between two consecutive maximums
          y₂-y₁ = (L   2/d) λ - (L 1 / d) λ₁          y₂ -y₁ = L / d λ
examining this equation if the wavelength decreases the value of y also decreases
the same calculation for destructive interference
          d y / L = (m + ½) κ
          y = [(m + ½) L / d] λ
 again when it decreases the decrease the distance
the correct answers are a, b