In a double slit arrangement fringes are produced using light of wavelength 4800 Å. One…
Physics · JEE Advanced · NTA Exams — Optics
In a double slit arrangement fringes are produced using light of wavelength 4800 Å. One slit is covered by a thin plate of glass of refractive index 1.4 and the other with another glass plate of same thickness but of refractive index 1.7 . By doing so the central bright shifts to original fifth bright fringe from centre. Thickness of glass plate is
- 8 mm
- 6 mm
- 4 mm
- 10 mm
Answer
(A) 8 mm
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