Physics - Geometrical Optics Question with Solution | TestHub
PhysicsGeometrical OpticsReflection at plane surfaceMedium2 minPYQ_2025
PhysicsMediumsingle choice
A lens having refractive index 1.6 has focal length of 12 cm , when it is in air. Find the focal length of the lens when it is placed in water.
(Take refractive index of water as 1.28)
Options:
Answer:
B
Solution:
As we know,
For air
For water
Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Reflection at plane surface
⏱ 2mℹ️ Source: PYQ_2025
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