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When an electromagnetic wave travels from one medium to
Chapter 25, Problem 35P(choose chapter or problem)
When an electromagnetic wave travels from one medium to another with a different speed of propagation, the frequency of the wave remains the same. Its wavelength, however,changes.
(a) If the wave speed decreases, does the wavelength increase or decrease? Explain.
(b) Consider a case where the wave speed decreases from c to \(\frac{3}{4} c\). By what factor does the wavelength change?
Equation Transcription:
Text Transcription:
\frac{3}{4} c
Questions & Answers
QUESTION:
When an electromagnetic wave travels from one medium to another with a different speed of propagation, the frequency of the wave remains the same. Its wavelength, however,changes.
(a) If the wave speed decreases, does the wavelength increase or decrease? Explain.
(b) Consider a case where the wave speed decreases from c to \(\frac{3}{4} c\). By what factor does the wavelength change?
Equation Transcription:
Text Transcription:
\frac{3}{4} c
ANSWER:Step 1 of 2
(a) We know the wavelength of an electromagnetic wave is directly proportional to its speed, so if the wave speed decreases, the wavelength will also decrease.