- Question 9 Of 9 A What Would Be The Photon Energy Of This Light You Will Find In Chapter 39 That Electrons Cannot Mov 1 (117 KiB) Viewed 41 times
- Question 9 Of 9 A What Would Be The Photon Energy Of This Light You Will Find In Chapter 39 That Electrons Cannot Mov 2 (80.4 KiB) Viewed 41 times
.Question 9 of 9 (a) What would be the photon energy of this light? You will find in Chapter 39 that electrons cannot move in definite orbits within atoms, like the planets in our solar system. To see why, let us try to "observe" such an orbiting electron by using a light microscope to measure the electron's presumed orbital position with a precision of, say, 50 pm (a typical atom has a radius of about 100 pm). The wavelength of the light used in the microscope must then be about 50 pm. Number i Units (b) How much energy would such a photon impart to an electron in a head-on collision? Number i Units -/1 E O It is impossible to "view" an atomic electron. O It is possible to "view" an atomic electron. (c) What do these results tell you about the possibility of "viewing" an atomic electron at two or more points along its presumed orbital path? (Hint: The outer electrons of atoms are bound to the atom by energies of only a few electron-volts.)
Question 4 of 9 View Policies Current Attempt in Progress The stopping potential for electrons emitted from a surface illuminated by light of wavelength 517 nm is 0.610 V. When the incident wavelength is changed to a new value, the stopping potential is 1.34 V. (a) What is this new wavelength? (b) What is the work function for the surface? (a) Number (b) Number M. Units -/1 = Units