JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 21
question_answer
In YDSE, distance between the slits and the screen is 2 m. Distance between slits is 2 mm and wavelength of light is 500 nm. A mica sheet of 100 urn thickness and refractive index \[1.5\]is placed after one of the slits. What is the number of fringes crossing a given point?