1.

In Young's double slit experiment, if L is the distance between the slits and the screen upon which interference pattern is observed, x is the average distance between the adjacent fringes and d being the slit separation. The wavelength of light is given by                                                     [MP PET 1993]

A. \[\frac{xd}{L}\]
B. \[\frac{xL}{d}\]
C. \[\frac{Ld}{x}\]
D. \[\frac{1}{Ldx}\]
Answer» B. \[\frac{xL}{d}\]


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