What does the wavelength of an EM wave tell about its energy?A.As the wavelength increases, the energy increases.B.As the wavelength decreases, the energy increases.C.As the wavelength increases, the energy goes to zero.D.As the wavelength decreases, the energy becomes constant.SUBMITarrow_backPREVIOUS
Question
What does the wavelength of an EM wave tell about its energy?A.As the wavelength increases, the energy increases.B.As the wavelength decreases, the energy increases.C.As the wavelength increases, the energy goes to zero.D.As the wavelength decreases, the energy becomes constant.SUBMITarrow_backPREVIOUS
Solution
The correct answer is B. As the wavelength decreases, the energy increases. This is based on the principle of the electromagnetic spectrum, where shorter wavelengths (like gamma rays and X-rays) have higher energy, while longer wavelengths (like microwaves and radio waves) have lower energy. This is also expressed in Planck's equation, E=hv, where E is energy, h is Planck's constant, and v is frequency. Since frequency and wavelength are inversely proportional, a decrease in wavelength corresponds to an increase in frequency and therefore an increase in energy.
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