Question

A symmetrical convergent lens is having focal length equal to twice the
radius of curvature of its surface then refractive index of material of lens is
equal to​

Answer 1

Answer:

ANSWER

Given:f=R1=−R2=R(let)

from lens maker's formula

f1=(μ−1)(R11−R21)

R1=(μ−1)R2

μ=23

Answer 2

Answer:

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Explanation:

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