Q.
In Young's double-slit experiment, the y-coordinates of central maxima and 10 th maxima are 2cm and 5cm, respectively. When the YDSE apparatus is immersed in a liquid of refractive index 1.5, the corresponding y-coordinates will be
Fringe width, β∝λ. Therefore, λ and hence β will decrease 1.5 times when immersed in the liquid. The distance between central maxima and 10th maxima is 3cm in vacuum. When immersed in the liquid, it will reduce to 2cm. Position of central maxima will not change while 10 th maxima will be obtained at y=4cm.