Question

1. Incident X-rays in a Compton scattering experimenthaveawavelength of 0.400 nm.
Determine the wavelength of the scattered X-rays that aredetectedatan angle of 80.0°. The Compton wavelength of theelectron is2.43 ×10^-12 m.


2. Electrons have been removed from a beryllium atom (Z =4)untilonly one remains.
Determine the energy of the photon that can be emittediftheremaining electron is in the n = 2
level.
(a) 13.6 eV
(b) 54.4 eV
(c) 122 eV
(d) 164 eV
(e) 218 eV

3. What is the mass defect of¹²⁰Sn₅₀(atomicmass = 119.902 200 u)? Thehydrogen atom has a mass of 1.00783 u;and the neutron has a mass of1.008 67 u. (uc2=931.5 MeV;Pleasegive the answer in MeV/c2.)

4. A particular nuclear fission reaction produces 1.50 ? 102MeVperfission. How many
fissions per second are required to generate 3.00 × 108Wofpower?
(a) 2.00 × 1016 (c) 3.20 × 1018 (e) 6.02×1023
(b) 5.25 × 1017 (d) 1.25 × 1019