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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2011

PhysicsEasysingle choice

A plano-concave lens is made of glass of refractive index 1.5 and the radius of curvature of its curved face is $100 cm$ . What is the power of the lens?

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Answer:

Solution:

$Hints: P = \frac{1}{f} = (μ - 1) (\frac{1}{R _{1}} - \frac{1}{R _{2}}) = (1.5 - 1) (\frac{1}{\infty} - \frac{1}{1 m}) = 0.5 (- 1) P = - 0.5 D$

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

⏱ 2mℹ️ Source: PYQ_2011

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