Physics - Geometrical Optics Question with Solution | TestHub
PhysicsGeometrical OpticsTIR/Prism and DispersionMedium2 minQB
PhysicsMediumstatement
STATEMENT – 1: A thin white parallel beam of light is incident on a plane glass- vacuum interface as shown. The beam may not undergo dispersion after suffering deviation at the interface (The beam is not incident normally on the interface.)
STATEMENT – 2: Vacuum has same refractive index for all colours of white light.
Options:
Answer:
B
Solution:
Solution:
STATEMENT – 1 is correct. It may be possible that angle of incidence is greater than critical angle for all the colours and whole white light gets reflected back.
STATEMENT – 2 is correct. The refractive index of vacuum is indeed for all colors (wavelengths) of white light.
Since both statements are correct and STATEMENT – 2 explains STATEMENT – 1, option B is the correct answer.
The final answer is
Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:TIR/Prism and Dispersion
⏱ 2mℹ️ Source: QB
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