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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensMedium2 minPYQ_2023

PhysicsMediumsingle choice

Two lenses of power $- 15 D$ and $+ 5 D$ are in contact with each other. The focal length of the combination is

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Solution:

$P = \frac{1}{f}$ For combination of lenses, $P = P_{1} + P_{2}$ Given: $P_{1} = - 15 D$ and $P_{2} = + 5 F$ $∴ ∴ P = - 10 D \Rightarrow f = - \frac{1}{10} m f = - 10 cm$

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

⏱ 2mℹ️ Source: PYQ_2023

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