Question

A biconvex lens with its two faces of equal radius of curvature R is made of a transparent medium of refractive index $\mu_{1}$. It is kept in contact with a medium of refractive index $\mu_{2}$ as shown in the figure.
(a) Find the equivalent focal length of the combination.
(b) Obtain the condition when this combination acts as a diverging lens.
(c) Draw the ray diagram for the case $\mu_{1} \ \textgreater \ (\mu_{2}+1)/2$, when the object is kept far away from the lens. Point out the nature of the image formed by the system.

Answer 1

Answer:

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