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

In deriving the single slit diffraction pattern, it was stated that th

1.	In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles of (nlamda)/a. Justify this by suitably dividing the slit to bring out the cancellation.
Answer» Solution :Divide the single slit in to n SMALLER slits of WIDTH `a.=a/n`. The angle `theta=(n lamda)/a=(lamda)/(a.)`. Each of the smaller slits sends ZERO intensity in the direction `theta`. The combination gives zero intensity as WELL.

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

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