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A biconvex lens made of glass (refractiv...

A biconvex lens made of glass (refractive index 1.5) has two spherical surfaces having radii 20cm and 30cm. Calculate its focal length.

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To find the focal length of a biconvex lens, we can use the Lensmaker's formula, which is given by: \[ \frac{1}{f} = (n - 1) \left( \frac{1}{R_1} - \frac{1}{R_2} \right) \] where: - \( f \) is the focal length of the lens, ...
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