a) Discuss the Fraunhofer diffraction at a single slit. Obtain the condition for principal maximum and...

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a) Discuss the Fraunhofer diffraction at a single slit. Obtain the condition for principal maximum and minimum. (10M) b) A plan wave of wavelength 5893 x 108 cm is incident normally on slit of width (4M) 0.5 mm and forms a diffraction pattern on a screen placed 1 m away from the slit. Calculate the separation of first dark band on either side of the central maximum. a) Discuss the Fraunhofer diffraction at a single slit. Obtain the condition for principal maximum and minimum. (10M) b) A plan wave of wavelength 5893 x 108 cm is incident normally on slit of width (4M) 0.5 mm and forms a diffraction pattern on a screen placed 1 m away from the slit. Calculate the separation of first dark band on either side of the central maximum.

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A Fraunhofer diffraction occurs when a wave encounters an aperture such as a single slit and the wavefronts interfere to form a diffraction pattern on ... View the full answer