In case of Fraunhoffer diffraction at a single slit the dif…

Physics Wave Optics Karnataka - CET Previous Year Question MCQ (Single Correct)

In case of Fraunhoffer diffraction at a single slit the diffraction pattern on the screen is correct for which of the following statements?

Central dark band having uniform brightness on either side.

Central dark band having alternate dark and bright bands of decreasing intensity on either side.

Central bright band having dark bands on either side.

Central bright band having alternate dark and bright bands of decreasing intensity on either side.

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The correct answer is:

: The diffraction pattern due to a single slit consists of a central bright maximum at along with alternate secondary minima and maxima on either side. The intensity distribution is as shown in figure.

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