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(D) In a Young's Double Slit Experiment $(YDSE)$,the fringe width $\beta$ is given by the formula $\beta = \frac{\lambda D}{d}$,where $\lambda$ is the

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Both $(B)$ and $(C)$

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(D) In a Young's Double Slit Experiment $(YDSE)$,the fringe width $\beta$ is given by the formula $\beta = \frac{\lambda D}{d}$,where $\lambda$ is the wavelength of light,$D$ is the distance between the screen and the slits,and $d$ is the distance between the two slits.Since the wavelength of blue light $(\lambda_{blue})$ is smaller than the wavelength of red light $(\lambda_{red})$,the fringe width $\beta$ decreases when the source is changed from red to blue.As $\beta$ decreases,the consecutive fringes come closer to each other.Since the fringe width decreases,more fringes can fit within the same space on the screen,which means the number of maxima formed on the screen increases.Therefore,both statements $(B)$ and $(C)$ are correct.

If the source of light used in a Young's Double Slit Experiment is changed from red to blue,then

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