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Lateral shift of the fringes when a thin glass plate covers one slit

The same question, asked 2 times: 20 Apr 2025 S1*, 13 May 2026 S1. Every wording below, oldest first.

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  1. Question 1

    20 Apr 2025 S1

    13
    In Young's double slit experiment, the distance between screen and aperture is 1 m . The slit width is 2 mm. Light of 6000Å6000\text{Å} is used. If a thin glass plate (μ=1.5)(\mu= 1.5) of thickness 0.04 mm is placed over one of the slits, then there will be a lateral displacement of the fringes by

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  2. Question 2

    13 May 2026 S1

    141
    In Young's double slit experiment, the slit width is 11 mm and screen is at a distance 22 m from slits. Light of 600600 nm is used. If a thin glass plate of refractive index 1.51.5 of thickness 0.060.06 mm is placed over one of the slits then there will be a lateral displacement of the fringes by

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