Test Preparation on Wave Optics-II-Physics Test Series IIT JEE-2020
1.
A mixture of light, consisting of wavelength 590 nm and an
unknown wavelength, illuminates Young's double slit and
gives rise to two overlapping interference patterns on the
screen. The central maximum of both lights coincide.
Further, it is observed that the third bright fringe of known
light coincides with the 4th bright fringe of the unknown
light. From this data, the wavelength of the unknown light is
