Find the focal length of the zone plate

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Reference no: EM13333847

A zone plate is to be set up on an optical bench , where it will be used an an enlarging lens. Its innermost zone is to be 0.2250mm in diameter and monochromic blue-green light of wavelength is 480nm from a cadmium arc is to be used. If the magnitude of the enlargements are to be eightfold in diameter find the focal length of the zone plate?

Reference no: EM13333847

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