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10 August, 18:34

Light waves travel from the air into a lens made of glass. Their velocity decreases as they enter the glass. How does this affect the frequency and wavelength of the light waves!

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  1. 10 August, 18:45
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    Frequency decreases

    Wavelength increases

    Explanation:

    Frequency is how often a wave occurs. Wavelength is how long a wave is.

    Waves that travel fast have a high frequency and short wavelength.

    When they slow down, they have a lower frequency and longer wavelength.

    Think about the electromagnetic spectrum: Gamma rays are fast, with high frequencies and short wavelengths (look bunched together). Radiowaves are slow, with low frequencies and long wavelengths (look stretched out).
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