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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2016

PhysicsEasysingle choice

A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is $4/3$ and the fish is $12 cm$ below the surface, the radius of this circle (in $cm$ ) is

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Answer:

Solution:

$sin i_{c} = \frac{1}{μ} = \frac{r}{r ^{2} + h ^{2}}$ Using $h = 12 cm, μ = 4/3$
We get $r = \frac{36}{7} cm$

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

⏱ 2mℹ️ Source: PYQ_2016

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