Physics - Geometrical Optics Question with Solution | TestHub
PhysicsGeometrical OpticsTIR/Prism and DispersionHard2 minPDF
PhysicsHardmultiple choice
In the figure (a) light is incident at an angle which is slightly greater than the critical angle. Now, keeping the incident ray fixed a slab of refractive index is placed on surface AB in fig. (b). Which of the following statements are correct?
Options:(select one or more)
Answer:
A, C
Solution:
For n3 < n1, the critical angle at AB decreases, so TIR occurs: A.
For n3 > n2, TIR can occur at CD and the ray returns to the original medium: C.
The other statements do not hold for all refractive-index choices.
Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:TIR/Prism and Dispersion
⏱ 2mℹ️ Source: PDF
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