In a standard YDSE apparatus a time film (µ = 1.5, t = 2.1 µm) is placed in front of upper slit. How far above or below the centre point of the screen are two nearest maxima located ? Take D = 1 m, d = 1 mm, λ = 4500.
(a) 1.5 mm
(b) 0.6 mm
(c) 0.15 mm
(d) 0.3 mm
