Is it more dangerous to stand in front of a beam of X-ray radiation with a very low intensity or a beam of red light with a much higher intensity? How does the photon model of light explain this apparent paradox?
Answer to relevant QuestionsLight of the same frequency is incident on two materials with different work functions. Discuss how the stopping voltage of the photoelectrons is affected by the work function. Each photon in a beam of light has an energy of 6.50 x 10-19 J. What is the light’s wavelength? What type of light is this? A metal with a work function of 2.40 eV is illuminated by a beam of monochromatic light. If the stopping potential is 2.50 V, what is the wavelength of the light? When the surface of a particular material is illuminated with monochromatic light of various frequencies, the stopping potentials for the photoelectrons are determined to be the following: Plot these data, and from the graph ...X-rays of wavelength 0.01520 nm are scattered from a carbon atom. The wavelength shift is measured to be 0.000326 nm. (a) What is the scattering angle? (b) How much energy, in eV, does each photon impart to each electron?
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