question_answer

In Youngs double slit experiment, the central fringe of interference pattern produced by light of wavelength \[6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\] shifts to the position of the 5th bright fringe on introducing a thin glass plate of refractive index of 1.50 in front of one of the slits. The thickness of the plate would be:

A)  \[\text{6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{cm}\]

B)                                                         \[\text{4 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{cm}\]       

C)         \[\text{5 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-4}}}\text{cm}\]       

D)         \[\text{6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-6}}}\text{cm}\]