Answer :
Answer: Option 5.
Decreases increases increases.
Explanation:
Electromagnetic spectrum refers to differences in frequencies, wavelengths and photon energies of electromagnetic radiation.
From the top of the list to the bottom i.e from radio waves, infrared waves, visible lights, ultraviolet radiation, gamma radiation, wavelengths decreases, the frequency increases as the photon energy increases.
The electromagnetic radiations : radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays have high-frequency and short wavelengths. Their wavelengths decrease. The photon energy is directly proportional to wave frequency.
The wavelength, frequency, and photon energy will decrease, increase, and increase respectively as one move from given top of the list to bottom.
Electromagnetic spectrum is arranged on the basis of differences in frequencies, wavelengths and photon energies of electromagnetic radiations.
Wavelength of the radio waves is highest and it decreases as move from given top of the list to bottom.
Frequency of the radio waves are least and it increases as move from given top of the list to bottom.
Photon energy of the radio wave is least and it increases as move from given top of the list to bottom.
X-rays and gamma rays high energy EM waves.
Therefore, the wavelength, frequency, and photon energy will decrease, increase, and increase respectively as one move from given top of the list to bottom.
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