Question 2 of 25Which of the following is an effect of increasing the wavelength of anelectromagnetic wave?O A. Energy decreases.O B. Speed decreases.O C. Speed increases.O D. Energy increases.SUBMIT

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25-10-2022
Physics

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Question 2 of 25Which of the following is an effect of increasing the wavelength of anelectromagnetic wave?O A. Energy decreases.O B. Speed decreases.O C. Speed increases.O D. Energy increases.SUBMIT

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CaponeB150177 CaponeB150177 · Answer 1 · 2022-10-25T15:03:43+02:00

Thesppeed of electromagnetic waves remains the same an is eqal to the speed of light. The wavelength is rearlated tothe energy bty the following ormula:

[tex]\lambda=\frac{c}{f}[/tex]

Wher:

[tex]\begin{gathered} \lambda=\text{ wavelength} \\ c=\text{ speed of light} \\ f=\text{ frequency} \end{gathered}[/tex]

Therefore, if the wavelength increases the frequency must decrease.-

Since the energy is proportiona to the frequency if the dfrequency decreases the energy decreases. Therefore, the right answer is A.