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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensMedium2 minPYQ_2021

PhysicsMediumsingle choice

A spherical convex surface of power 5 dioptre separates object and image space of refractive indices $1.0$ and $\frac{4}{3}$ respectively. The radius of curvature of the surface is

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Solution:

$P = 5 D$ $u = \infty$ then $\frac{1}{\infty} - \frac{4/3}{f} = \frac{1 - 4/3}{R}$ $- \frac{4}{3 f} = - \frac{1}{3 R}$ $\frac{f}{4} = R f = 4 R$ $∴ \frac{100}{5} = 4 R \Rightarrow R = \frac{25}{5} = 5 cm$

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

⏱ 2mℹ️ Source: PYQ_2021

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