The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is,
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a
32
b
43
c
98
d
53
answer is A.
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Detailed Solution
1f=(μ−1)1R1−1R2 as P=1f( in m)10=(μ−1)10.10+10.10(μ−1)=12μ=32