It seems like you didn't finish your question. However, I can tell you that if a thin glass plate is placed normally in the path of the beam coming from one of the slits in Young's experiment, it will introduce a phase change in the light wave passing through it. This is because light travels slower in glass than in air.

The phase change will cause a shift in the interference pattern observed on the screen. The fringes will shift because the path difference between the light waves reaching the screen from the two slits has changed.

If the glass plate is very thin, the shift might be small and hard to notice. But if the plate is thick enough, or if the refractive index of the glass is significantly different from that of air, the shift could be quite noticeable.

The exact amount of the shift depends on the thickness of the glass plate and its refractive index, as well as the wavelength of the light used in the experiment.

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It seems like you didn't finish your question. However, I can tell you that if a thin glass plate is placed normally in the path of the beam coming from one of the slits in Young's experiment, it will introduce a phase change in the light wave passing through it. This is because light travels slower in glass than in air.

The phase change will cause a shift in the interference pattern observed on the screen. The fringes will shift because the path difference between the light waves reaching the screen from the two slits has changed.

If the glass plate is very thin, the shift might be small and hard to notice. But if the plate is thick enough, or if the refractive index of the glass is significantly different from that of air, the shift could be quite noticeable.

The exact amount of the shift depends on the thickness of the glass plate and its refractive index, as well as the wavelength of the light used in the experiment.

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It seems like you didn't finish your question. However, I can tell you that if a thin glass plate is placed normally in the path of the beam coming from one of the slits in Young's experiment, it will introduce a phase change in the light wave passing through it. This is because light travels slower in glass than in air.

The phase change will cause a shift in the interference pattern observed on the screen. The fringes will shift because the path difference between the light waves reaching the screen from the two slits has changed.

If the glass plate is very thin, the shift might be small and hard to notice. But if the plate is thick enough, or if the refractive index of the glass is significantly different from that of air, the shift could be quite noticeable.

The exact amount of the shift depends on the thickness of the glass plate and its refractive index, as well as the wavelength of the light used in the experiment.

In Young\'s experiment, monochromatic light is used to illuminate the two slits A and B. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit

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