In a single slit diffraction of light of wave | vedclass

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(C) For a single slit of width $e$,the condition for the first minimum is given by $e \sin 	heta = \lambda$. Since $	heta$ is very small,we can appr

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$\frac{2b\lambda}{e} + e$

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(C) For a single slit of width $e$,the condition for the first minimum is given by $e \sin 	heta = \lambda$. Since $	heta$ is very small,we can approximate $\sin 	heta \approx 	heta$. Thus,$	heta = \frac{\lambda}{e}$. The angular width of the central maximum is $2	heta = \frac{2\lambda}{e}$. The linear width of the central maximum on a screen at a distance $b$ is the distance between the two first-order minima on either side of the central point. This is given by $w = 2b	heta + e = 2b \left( \frac{\lambda}{e} ight) + e = \frac{2b\lambda}{e} + e$.

In a single slit diffraction of light of wavelength $\lambda$ by a slit of width $e$,the size of the central maximum on a screen at a distance $b$ is

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