Physics Quiz (SSS3) Hi, Test your knowledge with our Physics questions! 1 / 20 The phenomenon in which electrons are emitted from a metal surface when light of certain frequency shines on it is called ______. photoelectric effect thermionic emission phosphorescence fluorescence 2 / 20 A transformer that increases voltage is called a ______ transformer. power step-up step-down isolating 3 / 20 The velocity of light in a vacuum is approximately ______. 3.0 × 10⁵ m/s 3.0 × 10⁷ m/s 3.0 × 10⁶ m/s 3.0 × 10⁸ m/s 4 / 20 The unit of capacitance is the ______. tesla farad henry ohm 5 / 20 The rate of radioactive decay is measured using the quantity called ______. activity half-life all of the above frequency 6 / 20 The force between two charges is inversely proportional to the square of the ______. product of the charges sum of the charges distance between the charges difference of the charges 7 / 20 The property of a nucleus that determines its stability is its ______. density charge size neutron-to-proton ratio 8 / 20 In the photoelectric effect, increasing the intensity of incident light ______. increases the work function increases the kinetic energy of emitted electrons decreases the number of emitted electrons increases the number of emitted electrons 9 / 20 The magnetic field inside a long solenoid is ______. non-uniform uniform and strong zero none of the above 10 / 20 The energy of a photon is directly proportional to its ______. amplitude wavelength frequency speed 11 / 20 The half-life of a radioactive isotope is ______. the time taken for the isotope to decay completely the time taken for the isotope to become stable the time taken for half of the radioactive nuclei to decay the time taken for the isotope to double in mass 12 / 20 The binding energy of a nucleus is the energy required to ______. ionize the nucleus separate the nucleus into its constituent nucleons break the nucleus into protons only increase the mass of the nucleus 13 / 20 The electronvolt (eV) is a unit of ______. energy charge power force 14 / 20 The unit of electric field strength is ______. volt newton ampere newton per coulomb (N/C) 15 / 20 The SI unit of magnetic flux is the ______. henry gauss weber tesla 16 / 20 Which of the following represents Ohm’s law? V = I²R I = VR V = IR P = IV 17 / 20 Which law states that the induced electromotive force in a coil is proportional to the rate of change of magnetic flux linkage? Coulomb’s law Faraday’s law Lenz’s law Ohm’s law 18 / 20 The distance covered per unit time is called ______. velocity speed displacement acceleration 19 / 20 The type of semiconductor doping that adds extra electrons is called ______. p-type intrinsic n-type extrinsic 20 / 20 When a light ray passes from air to glass, it bends towards the ______. surface air reflected ray normal Your score isThe average score is 63% 0% Restart quiz
