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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at plane surfaceEasy2 minPYQ_2020

PhysicsEasysingle choice

A fish looking up through the water sees the outside world contained in circular horizon. If the refractive index of water is $\frac{4}{3}$ and the fish is $12 c m$ below the surface, what is the radius of this circle (in $cm$ )?

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Answer:

Solution:

$r = \frac{h}{\sqrt{µ^{2} - 1}} = \frac{12}{\sqrt{{(\frac{4}{3})}^{2} - 1}} = \frac{36}{\sqrt{7}} c m$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at plane surface

⏱ 2mℹ️ Source: PYQ_2020

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