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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionEasy2 minPYQ_2020

PhysicsEasysingle choice

A glass prism ABC (refractive index 1.5), immersed in water (refractive index 4/3). A ray of light is incident normally on face $A B$ . If it is totally reflected at face $A C$ then

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Answer:

Solution:

For total internal reflection at $A C$ face

$\sin i \geq \frac{μ_{w}}{u_{g}}$

$\sin θ \geq \frac{4}{3 \times 1.5}$

$\sin θ \geq \frac{8}{9}$

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

⏱ 2mℹ️ Source: PYQ_2020

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