If the Wavelength of a Monochromatic Source Is 490 Nm

question 52

Multiple Choice

If the wavelength of a monochromatic source is 490 nm in vacuum,what is the wavelength from the same source when it passes through a liquid where the speed of light is 2.40 x 10⁸ m/s? (c = 3.00 x 10⁸ m/s)

• A)671 nm
• B)612.5 nm
• C)490 nm
• D)392 nm

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