A planoconvex lens becomes an optical system of 28 cm focal length when its plane...

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Physics

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A planoconvex lens becomes an optical system of 28 cm focal length when its plane surface is silvered and illuminated from left to right as shown in Fig A If the same lens is instead silvered on the curved surface and illuminated from other side as in Fig B it acts like an optical system of focal length 10 cm The refractive index of the material of lens is A B skipped C 1 50 1 55 1 75 QUESTION 1 2 6 O Correct 0 7 MY PERFOR SCORE 1 00

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