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18 February, 23:23

Light traveling in a vacuum has a wavelength of 550nm when it enters a pool of water (n = 1.33). What would the wavelength of the light be in the water? (a) 336nm (b) 414nm (c) 550nm (d) 732nm

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  1. 19 February, 02:43
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    b) 414nm

    Explanation:

    let λ1 be the wavelenght of light in a vacuum and λ2 be the wavelength of light in water.

    the relationship between the refractive index wavelenghts in a vacuum and in water is given by:

    n = λ1/λ2

    λ2 = λ1/n

    = (550) / (1.33)

    = 413.53 nm

    ≈ 414nm

    Therefore the wavelength of light in water is 414mn.
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