Medium Change in YDSE|| shape OF Fringes|| Thin Film || Lloyd's mirror

Shape OF fringes ||Bi-prism

Lloyd’s Single mirror

YDSE Set up in Medium||Inclined Beam OF Light||YDSE with White Light||Lloyd's Mirror|| Fresnel's Biprism

Lloyds mirror experiment

Shape Of Interference Fringes In Ydse

What is the shape of interference fringes in YDSE ?

When a light wave passes from a rarer medium to a denser medium, there will be a phase change of pi radians. This difference brings change in the conditions for constructive and destructive interference. This phenomena also reasons the fromation of interference pattern in thin films like, oily layer, soap film, etc., but has no reason on the shifting of fringes from the central portion outward. The shift is dependent on the refractive index of the material as per the relation, Delta y = (mu - 1) t The condition for constructive interference in Lloyd's single mirror experiment is the path difference which is equal to

Interface example||YDSE||Fringe Width

Light source of wavelength 400 nm used in a Lloyd's mirror, lies 1 mm above the plane mirror. Find the distance of first minima above the mirror. Distance of the screen from the plane of the sources is 2 m.

Colours thin films are due to