A +4.50d lens is made in curved form with a concave surface of radius +100mm in glass of refractive index 1.6 with a axial thicknes of 4.8mm. What is the radius of curvature of the convex surface?
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.भगवान उसी की मदद करता है जो अपनी मदद खुद करता है तो कृपया करके अपनी मदद खुद करेंगे अब दिमाग मत चाट 13
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