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A glass or glycerin convex lens of refra...

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.

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To find the new focal length of the lens when it is immersed in ethyl alcohol, we can use the Lensmaker's formula. Let's go through the solution step by step. ### Step 1: Understand the Lensmaker's Formula The Lensmaker's formula is given by: \[ \frac{1}{f} = (\mu_{\text{relative}} - 1) \left( \frac{1}{R_1} - \frac{1}{R_2} \right) \] where: ...
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