Question

a bicnvex lens of radii 5 cm of 5 diopter power then what is the refractive index of the lens​

Answer 1

Answer:

a bicnvex lens of radii 5 cm of 5 diopter power then what is the refractive index of the lens

it's refractive index is1

Answer 2

hi mate here is the answer

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For equi biconvex lens,

\frac{1}{f } = (u - 1) \frac{2}{r}

5 = (u - 1) \frac{2}{5}

u - 1 = \frac{25}{2}

u = \frac{25}{2} + 1

u = \frac{25 + 2}{2}

u = \frac{27}{2}

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hope it is helpful