Traffic signals are often now made of LEDs (lightemitting diodes). Amber and green ones are pictured here.

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Traffic signals are often now made of LEDs (lightemitting diodes). Amber and green ones are pictured here. 

(a) The light from an amber signal has a wavelength of 595 nm, and that from a green signal has a wavelength of 500 nm. Which has the higher frequency? 

(b) Calculate the frequency of amber light.

(a) (b) Photos: Mike Condren/UW/MRSEC

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Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

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