A glass or glycerin convex lens of refractive index 3/2 has got a focal length equal to 50 cm. Find the focal length of the lens

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A glass or glycerin convex lens of refractive index 3/2 has got a focal length equal to 50 cm. Find the focal length of the lens, if it is immersed in ethyl alcohol of refractive index 1.36.
09
Sep
A glass or glycerin convex lens of refractive index 3/2 has got a focal length equal to 50 cm. Find the focal length of the lens, if it is immersed in ethyl alcohol of refractive index 1.36. A glass or glycerin convex lens of refractive index 3/2 has got a focal length equal to 50 [...]
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