The Young's experiment is performed with the lights of blue (λ=4360Å) and green colour (λ=5460Å). If the distance of the 4th fringe from the centre is x, then
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a
x( Blue )=x (Green)
b
x (Blue) >x (Green)
c
x (Blue)
d
x( Blue )x( Green )=54604360
answer is C.
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Detailed Solution
Distance of nth bright fringe yn=nλDd i.e., yn∝λxn1xn2=λ1λ2⇒x( Blue )x( Green )=43605460∴ x( Green )>x (Blue).
The Young's experiment is performed with the lights of blue (λ=4360Å) and green colour (λ=5460Å). If the distance of the 4th fringe from the centre is x, then