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(D) The fringe width $\beta$ in Young's double-slit experiment is given by the formula $\beta = \frac{\lambda D}{d}$,where $\lambda$ is the wavelength

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There will be no change in fringe width.

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(D) The fringe width $\beta$ in Young's double-slit experiment is given by the formula $\beta = \frac{\lambda D}{d}$,where $\lambda$ is the wavelength of light,$D$ is the distance between the slits and the screen,and $d$ is the distance between the two slits.When a thin glass plate is placed in the path of one of the beams,it introduces an additional path difference,which causes the entire interference pattern to shift on the screen.However,the fringe width $\beta$ depends only on the wavelength $\lambda$,the distance $D$,and the slit separation $d$. Since none of these parameters are changed by the introduction of the glass plate,the fringe width remains constant.

In Young's double-slit 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. If a thin glass plate is placed normally in the path of the beam coming from slit $A$,then:

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