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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsDispersionMedium2 minQB

PhysicsMediuminteger

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 dispersion without deviation. The angle (in degree) of the prism $P_{2}$ is :

Answer:

Solution:

Dispersion without deviation: net deviation zero, $(μ_{1} - 1) A_{1} = (μ_{2} - 1) A_{2}$ .

$(1.54 - 1) \times 4 = (1.72 - 1) \times A_{2}$

$A_{2} = \frac{0.54 \times 4}{0.72} = 3°$ . Answer: 3

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Dispersion

⏱ 2mℹ️ Source: QB

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