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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionEasy2 minPYQ_2021

PhysicsEasysingle choice

A ray of light is incident at an angle ' $i$ ' on one face of thin prism. The ray emerges normally from the other face. Refractive index of the glass prism is ' $n$ ' and angle of prism is ' $A$ '. The value of ' $i$ ' is

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Solution:

From the figure, $A = r$ $n = \frac{sin i}{sin r} = \frac{sin i}{sin A}$ For small angles, $n = \frac{i}{A}$ $∴ i = An$

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

⏱ 2mℹ️ Source: PYQ_2021

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