Which one of the following has the highest energy content?
Correct answer: A. 103 photons of wavelength 2pm (y-rays)
- A. 103 photons of wavelength 2pm (y-rays)
- B. 102 photons of wavelength 1mm (X-rays)
- C. 106 photons of wavelength 50mm (Infrared)
- D. 106 photons of wavelength 200mm (UV)
Explanation
Gamma rays are the most energetic(high frequency) EM waves with shortest wavelength.
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About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
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