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Monochromatic light of wavelength 589 nm...

Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? Refractive index of water is 1.33.

Text Solution

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(a) Reflected light: (wavelength, frequency, speed same as incident light)
`lambda=589nm, v=5.09xx10^(14)Hz. C=3.00xx10^(8)ms^(-1)`
(b) Refracted light: (frequency same as the incident frequency)
`v=5.09xx10^(14)Hz`
`v=(c//n)=2.26xx10^(8)ms^(-1), lambda=(u//v)=444nm`
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