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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionEasy2 minPYQ_2005

PhysicsEasysingle choice

What should be the minimum value of refractive index of the material of the prism for the reflections to take place as shown in the figure?

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Answer:

Solution:

From the formula, the minimum refractive index is $μ_{m} = \frac{sin i}{sin r} = \frac{sin 9 0 ^{\circ}}{sin 4 5 ^{\circ}} = \frac{1}{1/ 2} = 2 = 1.414 \approx 1.4$

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

⏱ 2mℹ️ Source: PYQ_2005

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