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JEE Advanced 2014 Paper 1

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Question : 9

Total: 60

A light source, which emits two wave lengths λ1=400 nm and λ2=600 nm,is used in young's double slit experiment if recorded fringe widths for λ1 and λ2 are β1 and β2 and the number of fringes for them within a distance y on one side of the central maximum are m1 and m2,respectively,then

[JEE Adv 2014 P1]

β2>β1
m1>m2
From the central maximum 3rd maximum of λ2 overlaps with 5th minimum of λ1
The angular separation of fringes for λ1 is grater than λ2

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