QNEET-2019-Ph-788: NEET 2019 Physics - Class 12 NEET-2019-Ph-788 Solution: In a double slit experiment when light of wavelength 400 nm was …

In a double slit experiment when light of wavelength 400 nm was used the angular width of the first minima formed on a screen placed 1 m away was found to be $0.2^\circ$. What will be the angular width of the first minima ($\mu_{water} = 4/3$) if the entire experimental apparatus is immersed in water? $0.15^\circ$ $0.05^\circ$ $0.1^\circ$ $0.266^\circ$