Determine wavelength and frequency of light in the alcohol


i) A He-Ne laser beam (having λ = 632.8 nm in air) is directed via ethyl alcohol.  Determine the wavelength and frequency of the light in the alcohol?

ii) An object 3 cm tall is positioned 20 cm from the front of a concave mirror having a radius of curvature of 30 cm. Where the image is made and how tall is it?

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Physics: Determine wavelength and frequency of light in the alcohol
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