A Beam of Light Passes from Air into Water

question 57

Multiple Choice

A beam of light passes from air into water.Which is necessarily true?

• A)The frequency is unchanged and the wavelength increases.
• B)The frequency is unchanged and the wavelength decreases.
• C)The wavelength is unchanged and the frequency decreases.
• D)Both the wavelength and frequency increase.
• E)Both the wavelength and frequency decrease.

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Small pieces of data stored on a user's computer by a web browser, mainly used to track and remember information about the user's activities and preferences.