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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionMedium2 minQB

PhysicsMediumsingle choice

A thin prism $P_{1}$ with angle 4° made of glass of refractive index 1.54 is combined with another thin prism $P_{2}$ made of glass of refractive index 1.72 to produce no deviation. The angle of prism $P_{2}$ is :-

Options:

Answer:

Solution:

For no deviation, the deviations cancel: $A_{1} (μ_{1} - 1) = A_{2} (μ_{2} - 1)$ .

$4 (1.54 - 1) = A_{2} (1.72 - 1) \Rightarrow A_{2} = \frac{4 \times 0.54}{0.72} = 3^{\circ}$ . Hence (A).

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

⏱ 2mℹ️ Source: QB

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