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Yellow light with wavefront 0.5 mum is a...

Yellow light with wavefront 0.5` mum` is air surface refraction in a medium in which velocity of light is `2xx10^(-8)m//s`. Then the wavelength of the light in the medium would be .

Text Solution

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`(lambda_(1))/(lambda_(2))=(v_(1))/(v_(2))`
Here, `lambda_(1)=0.5 mum, v_(1)=3xx10^(8)m//s`
`lambda_(2)=? (x) , v_(2)=2xx10^(8)m//s`
`0.5/x=(3xx10^(8))/(2xx10^(8))`
`x=0.33 mum`
Note : The frequency remains unchanged
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