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According to Huygens' principle, during refraction of light from air to a denser medium
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Wavelength and speed decrease
According to Huygen's principle, during refraction of lightfrom air to a denser medium the wavelength of light and speed
decrease. Since
\( \lambda \) medium \( =\frac{\lambda_{0}}{\mu} \) \( \Rightarrow \lambda_{\text {medium }} \propto \frac{1}{\mu} \)
Therefore, for denser medium wavelength decreases. Also,speed of light is lesser in a medium than in vacuum.
decrease. Since
\( \lambda \) medium \( =\frac{\lambda_{0}}{\mu} \) \( \Rightarrow \lambda_{\text {medium }} \propto \frac{1}{\mu} \)
Therefore, for denser medium wavelength decreases. Also,speed of light is lesser in a medium than in vacuum.
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