CLASS EXERCISE #23 - 28 July 2005Light of wavelength 520 nm is incident normally (perpendicularly)from air onto an interface with a thin oil film (1.30) that is8œfloating on water (1.33).(a) What is the frequency of this light?0œ-Î œÐ ‚ÑÎÐ‚Ñœ‚-310 m/s52010m5.810 Hz8914(b) What is the wavelength of this light in the oil?-oiloiloiloilœ@ Î0œÐ-Î8 ÑÎ0œÐ-Î0ÑÎ852010m1.30400 nmœÐ‚9(c) What are the phase changes, if any, of the light reflected fromthe top and bottom of the oil film?
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