Ray Optics-Snell's Law (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 6 - 6 of 6

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Question number: 6

» Ray Optics » Snell's Law

Appeared in Year: 2014



The angles of incidence and refraction of a monochromatic ray of light of wavelength λ at an air-glass interface are i and r, respectively. A parallel beam of light with a small spread δλ in wavelength about a mean wavelength λ is refracted at the same air-glass interface. The refractive index µ of glass depends on the wavelength λ as where a and b are constants. Then the angular spread in the angle of refraction of the beam is –


Choice (4) Response





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