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Physics Review Question Unit: waves Year: 1989 Question#: 40 Question: Which of the following electromagnetic waves has the lowest frequency? (1 ) violet light (2 ) green light (3 ) yellow light (4 ) red light What is this question really asking? Explanation by: Allison B [ Return to question menu ] Answer 1 violet light INCORRECT wavelength and frequency are inversely related (velocity = frequency X wavelength). the regents reference table shows that the wavelength of violet light is small, so it has a high frequency. return to top Answer 2 green light INCORRECT wavelength and frequency are inversely related (velocity = frequency X wavelength). the regents reference table shows that the wavelength of green light is small, so it has a high frequency. return to top Answer 3 yellow light INCORRECT frequency and wavelength are inversely related (velocity = frequency X wavelength). the regents reference table shows that yellow light has a small wavelength, so it has a high frequency. return to top Answer 4 red light CORRECT frequency and wavelength are inversely related (velocity = fequency X wavelength). the regents reference table shows that red has the longest wavelength of the visible spectrum, so it has the lowest frequency. return to top What's this question really asking? This question is asking if you know the wave characteristics of the visible spectrum. return to top |
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