MHT CET 2022 Physics question
On placing a thin film of mica of thickness 12 x 10 cm in the path of one of the interfering waves in Young's double slit experiment using monochromatic light, the fringe pattern shifts through a distance equal to width of a bright fringe. If wavelength used is = 6 x 10 cm, the refractive index of mica is
Answer: (D)
Solution
Inserting a film of thickness and refractive index in one path shifts the pattern by . The fringe width is . The shift equals one fringe width, so , i.e.
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account