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find the intensity at a point on a screen in young double slit experiment where the interfering wave of equal intensity have have a path difference of lemda/4,lemda/3
Asked by tannusharan31 | 05 Nov, 2023, 05:31: PM
Let and are the intensities of two waves that are interfering in double slit experiment.

Resultant Intensity is given as

.........................(1)

where θ is phase difference between the waves .

If path difference between waves is λ/4 , where λ is wavelength , then phase difference θ = (2π)/4 = π/2 .

If each wave has equal intensity  and path difference between waves is λ/4 , then we get resultant
intensity from eqn.(1) as

----------------------------------------------------

If path difference between waves is λ/3 , where λ is wavelength , then phase difference θ = (2π)/3.

If each wave has equal intensity  and path difference between waves is λ/3 , then we get resultant
intensity from eqn.(1) as

Answered by Thiyagarajan K | 05 Nov, 2023, 07:50: PM

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