A two-slit Fraunhofer interferencediffraction pattern is observed with light of wavelength 500 nm. The slits have a

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A two-slit Fraunhofer interference–diffraction pattern is observed with light of wavelength 500 nm. The slits have a separation of 0.1 mm and a width of a.

(a) Find the width a if the fifth interference maximum is at the same angle as the first diffraction minimum.

(b) For this case, how many bright interference fringes will be seen in the central diffraction maximum?


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