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Light of wavelength 6000Å enters from ai...

Light of wavelength `6000Å` enters from air into water (a medium of refractive index 4/3). Find the speed and wavelength [c = 3 × 108 m/s

A

`2.25 × 10^(8) m//s, 4500Å`

B

`1.25 × 10^(8) m//s, 2500Å`

C

`3.15 × 10^(8) m//s, 3500Å`

D

`3.15 × 10^(8) m//s, 5500Å`

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