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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensMedium2 minQB

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An equiconvex air lens ( $R_{1} = R_{2} = 10$ cm) is made in a glass medium having refractive index ( $μ = 3/2$ ). Find the refractive index of the material to be filled in, so that the power of the lens changes sign without change in its magnitude.

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Answer:

Solution:

$(\frac{μ _{x}}{3/2} - 1) = - (\frac{1}{3/2} - 1) \Rightarrow \frac{2 μ _{x}}{3} = 2 - \frac{2}{3} = \frac{4}{3} \Rightarrow μ_{x} = 2$ .

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: QB

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