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A narrow slit of width d is placed in fr...

A narrow slit of width d is placed in front of a convex lens of focal length 0.5 m. the slit is illuminated normally by a light of wavelength `5.89 xx 10^(-7)`m. If the distance between two first minima on the either side of central maximum is `2xx10^(-3)`m, calculate the width d of the slit.

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The correct Answer is:
0.2945 mm
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