NEET Physics Refraction MCQ Question
A monochromatic light wave with wavelength λ₁ and frequency ν₁ in air enters another medium. If the angle of incidence and angle of refraction at the interface are 45° and 30° respectively, then the wavelength λ₂ and frequency ν₂ of the refracted wave are:
λ₂ = λ₁, ν₂ = √2ν₁
λ₂ = 1/√2 λ₁, ν₂ = ν₁
λ₂ = λ₁/2, ν₂ = 2ν₁
λ₂ = 2λ₁, ν₂ = ν₁/2
Correct Answer
Detailed Explanation
Using Snell's law and the relationship between wavelength and refractive index, the wavelength decreases by a factor of √2 while the frequency remains unchanged.
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