A monochromatic light of `lambda=5000Å` is inciden on two slits seperated by a distance of `5xx10^(-4)m.` if a thin glass of thickness `1.5xx10^(-6)`

Question

A monochromatic light of `lambda=5000Å` is inciden on two slits seperated by a distance of `5xx10^(-4)m.` if a thin glass of thickness `1.5xx10^(-6)`

A monochromatic light of `lambda=5000Å` is inciden on two slits seperated by a distance of `5xx10^(-4)m.` if a thin glass of thickness `1.5xx10^(-6)` m and refractive index `1.5` placed between one of the slits and screen. The pahses difference introduced at the position of central maxima is
A. `3pi `
B. `2 pi`
C. `2pi//3`
D. `pi//3`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
Path difference `(mu-1)t=(1.5-1)1.5xx10^(-6)`
Phase difference `=(2pi)/(lamda)xx(mu-1)t`
`=(2pixx0.5xx1.5xx10^(-6))/(5ccx10)`
`=3pi`

4 views Answered 2023-02-05 15:29