Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionMedium2 minQB

PhysicsMediumsingle choice

A light ray is incident on lower medium boundary at an angle 30° with the normal. Which of following statement is/are true?

Answer:

Solution:

Snell's law at the entry face gives a refraction angle of 60 degrees, so the ray meets surface B at 60 degrees.

TIR at B needs $sin 6 0^{\circ} > sin θ_{C}$ , which reduces to $μ_{3} < 2$ .

Answer: B

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

⏱ 2mℹ️ Source: QB

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