1) The note middle C played on a piano always differs from middle C played on a violin because of a difference in... a) frequency b) wavelength c) fundamentals d) harmonics 2) Chromatic aberration of a lens is caused by... a) diffraction b) diffusion c) dispersion d) interference 3) The molar gas constant is the same for all gases because, at the same pressure and temperature, equal volumes of gases have the same... a) number of molecules b) average kinetic energy c) density d) mass 4) A Hall probe is used to determine... a) the magnetic moment of a coil b) the susceptibility of a material c) relative permittivity d) magnetic flux density 5) In a nuclear fission reactor, graphite is often used for... a) absorbing neutrons and controlling the reaction b) slowing down neutrons c) preventing the radiation from escaping into atmosphere d) all the above 6) Acoustics is the branch of physics studying... a) light b) heat c) sound d) motion of planets 7) The element whose nuclei contain the most tightly bound nucleons is... a) He b) C c) Fe d) U 8) A particle left no tracks in a cloud chamber, did not register on a Geiger-Muller tube and failed to make a zinc sulphide screen glow. It was most likely... a) electron b) proton c) neutron d) alpha particle

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