In a Young's double slit experiment, the fringe width is found to be 2 mm , when light of wavelength 6000 Å is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as 1 .33 .

Question

In a Young's double slit experiment, the fringe width is found to be 2 mm , when light of wavelength 6000 Å is used. Find the final fringe width if the whole apparatus is immersed in water having refractive index as 1 .33 ., 0.5 m m, 1 m m, 1.5 m m, 2 m m

MARKS App · Accepted Answer

Fringe width β = 2 mm = 2 × 10 − 3 m λ = 6000 Å μ = 1.33 β ′ = ? β ′ = β μ = 2 1.33 = 1 . 5 mm

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