10.21 In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n $λ$ /a.

Justify this by suitably dividing the slit to bring out the cancellation.

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Payal Gupta | Contributor-Level 10

9 months ago

10.21 Consider that a single slit of width $d$ is divided in to $n$ smaller slits.

Therefore width of each slit,

$d^{'} = \frac{d}{n}$

Angle of diffraction is given by the relation,

$? = \frac{\frac{d}{d}}{d} ?$ = $\frac{?}{d}$

Now, each of these infinitesimally small slit sends zero intensity in the direction of Ø.

Hence, the combination of these slits will giv

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10.21 In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of n λ /a. Justify this by suitably dividing the slit to bring out the cancellation.