Physics 7408: Particles and Radiation Topical Past Paper Questions

Figure 3 shows a modern version of Bertozzi's experiment to measure the kinetic energy of high-speed electrons. A timer is used to measure the time taken for a pulse of electrons to travel from the detector to the aluminium block. Figure 3 A potential difference (pd) of 1.30 MV i…

Electrons with a certain kinetic energy pass through a powdered crystalline sample and are incident on a fluorescent screen. The diagram shows a sketch of the diffraction pattern produced. A change is made and this second pattern is produced. Which change could produce the second…

Which particle has the smallest de Broglie wavelength? [1 mark] A an electron moving at $ 4 \times 10^3 \, \text{m s}^{-1} $ □0 B a proton moving at $ 4 \times 10^3 \, \text{m s}^{-1} $ □0 C an electron moving at $ 8 \times 10^5 \, \text{m s}^{-1} $ □0 D a proton moving at $ 8 \t…