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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsTIR/Prism and DispersionEasy2 minPYQ_2021

PhysicsEasysingle choice

The refractive index of glass is 1.5 and that of water is 1.33 . The critical angle for a ray of light going from glass to water is

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Answer:

Solution:

$μ_{g} = 1.5 = \frac{3}{2} μ_{w} = 1.33 = \frac{4}{3} ∴_{w} μ_{g} = \frac{μ _{g}}{μ _{w}} = \frac{3}{2} \times \frac{3}{4} = \frac{9}{8} sin C = \frac{1}{_{w} μ _{g}} = \frac{8}{9} ∴ C = sin^{- 1} (\frac{8}{9})$

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

⏱ 2mℹ️ Source: PYQ_2021

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