An equiconvex lens of refractive index 1.5 and focal length 10 cm is held with its axis vertical and its lower surface immersed in water, the upper surface being in air. At what distance from the lens will a vertical beam of parallel rays incident on the lens be focussed? mu. = 4//3.

An equiconvex lens of refractive index 1.5 and focal length 10 cm is h

1.	An equiconvex lens of refractive index 1.5 and focal length 10 cm is held with its axis vertical and its lower surface immersed in water, the upper surface being in air. At what distance from the lens will a vertical beam of parallel rays incident on the lens be focussed? mu. = 4//3.
Answer» SOLUTION :20 CM from the LENS in WATER

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An equiconvex lens of refractive index 1.5 and focal length 10 cm is held with its axis vertical and its lower surface immersed in water, the upper surface being in air. At what distance from the lens will a vertical beam of parallel rays incident on the lens be focussed? mu. = 4//3.

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