11. IE ••

(a) In a double-slit experiment, if the distance from the double slits to the screen is increased, the separation between the adjacent maxima will

(1) increase, (2) decrease, (3) remain the same.

Explain.

(b) Yellow-green light (λ = 550 nm) illuminates a double-slit separated by 1.75 × 10−4 m. If the screen is located 2.00 m from the slits, determine the separation between the adjacent maxima.

(c) What if the screen is located 3.00 m from the slits?