Optics: JEE Main 2020 Physics question

JEE Main 2020 · 3 Sep, Evening shift · Q8426

JEE Main 20203 Sep, Evening shiftPhysicsEasyOptics190× since 2002

Two light waves having the same wavelength

\lambda

in vacuum are in phase initially. Then the first wave travels a path L₁ through a medium of refractive index n₁ while the second wave travels a path of length L₂ through a medium of refractive index n₂ . After this the phase difference between the two waves is :

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JEE Main 2020 Optics Question with Solution (3 Sep Evening shift, Q8426) | JEE Arc