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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionMedium2 minPDF

PhysicsMediumsingle choice

Passage / Comprehension

A transparent plastic semicylinder has refractive index $μ = 2$ and radius R. A narrow light ray enters normally through the flat face at distance d from the symmetry axis, as shown.

What can the maximum value of d be so that the light ray can still leave the other side of the semi cylinder ?

Options:

Answer:

Solution:

$sin i_{c} = \frac{1}{μ} = \frac{1}{2}$

$i_{c} = 4 5^{\circ}$

$d_{ma x} = R sin i_{c} = \frac{R}{2}$

Hence option A.

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:TIR/Prism and Dispersion

⏱ 2mℹ️ Source: PDF

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