The diagram shows a narrow beam of white light being dispersed by a glass prism to produce a visible spectrum.
Which statement describes what happens to the frequency and wavelength of the light in observing from P to Q across the spectrum?
1 )
The frequency and the wavelength both increase.
2 )
The frequency and the wavelength both decrease.
3 )
The frequency decreases but the wavelength increases.
The frequency increases but the wavelength decreases.
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