In Young's double slit experiment the two slits are illuminated by light of wavelenght 5890 A ˚ and the distance between the fringes obtained on the screen is 0. 2 ∘ . If the whole apparatus is i

Question

In Young's double slit experiment the two slits are illuminated by light of wavelenght 5890 A ˚ and the distance between the fringes obtained on the screen is 0. 2 ∘ . If the whole apparatus is immersed in water then the angular fringe width will be, if the refractive index of water is 4/3 .

TestHub · Accepted Answer

w a ​ = λ / d ⇒ w a ​ α λ w a ​ ( w a ​ ) water ​ ​ = λ λ water ​ ​ = μ water ​ λ λ ​ ( w a ​ ) water ​ = 4 2 × 3 ​ = 0.1 5 ∘ ​

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