Question

A biconvex has a focal length 1/2 the radius of curvature of their.what is the refrctive index of the lens material.​

Answer 1

Answer:

y^2 × y^2

(y)2+(y2)

(y)4

Ans= y^4.......y^2 × y^2

(y)2+(y2)

(y)4

Ans= y^4.......y^2 × y^2

(y)2+(y2)

(y)4

Ans= y^4.......

Answer 2

Answer:

sorry mate don't know please mark me as brainlist