State the expression for the new fringe width when a Young’s double-slit arrangement

PHYSICS · Subjective · CBSE · Physics · Wave Optics · Wave Optics

Problem

State the expression for the new fringe width when a Young’s double-slit arrangement, which shows a fringe width

\beta

in air, is completely immersed in a liquid of refractive index

\mu

; express the answer in terms of

\beta

and

\mu