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A ray of light of wavelength 720 nm is r...

A ray of light of wavelength 720 nm is refracted into a medium of refractive index 1.5. The wavelength of light in the medium is

A

`7200 overest@A`

B

`4800 overest@A`

C

`10800 overest@A`

D

`7201.5 overest@A`.

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