Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2010

PhysicsEasysingle choice

A plano-convex lens $(f = 20 cm)$ is silvered at plane surface. Now focal length will be :

Answer:

Solution:

$Hints : P = 2 P_{L} + P_{M} P_{M} = 0 P = \frac{1}{f} \times 2 = \frac{2}{f} - \frac{1}{F} = \frac{2}{f} F = - \frac{f}{2}$

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

⏱ 2mℹ️ Source: PYQ_2010

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