A biconvex lens of refractive index 1.5 has a focal length of 20 cm20 cm in air. Its focal length when immersed in a liquid of refractive index 1.6 will be:
Question
Solution 1
The focal length of a lens is given by the lensmaker's formula:
1/f = (n-1)(1/R1 - 1/R2)
where: f is the focal length, n is the refractive index of the lens material, R1 and R2 are the radii of curvature of the lens surfaces.
Given that the lens is biconvex, R1 = -R2. Therefore, the formula simpl Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob
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