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A Soap Film Is Illuminated by White Light Normal to Its

Question 15

Multiple Choice

A soap film is illuminated by white light normal to its surface. The index of refraction of the film is 1.50. Wavelengths of 480 nm and 800 nm and no wavelengths between are be intensefied in the reflected beam. The thickness of the film is:


A) 1.5* 10-5 cm
B) 2.4 *10-5 cm
C) 3.6 * 10-5 cm
D) 4.0 * 10-5 cm
E) 6.0 * 10-5 cm

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