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 ______. thermionic emission photoelectric effect fluorescence phosphorescence 2 / 20 Which of the following represents Ohm’s law? I = VR V = I²R P = IV V = IR 3 / 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 Ohm’s law Lenz’s law 4 / 20 The electronvolt (eV) is a unit of ______. power energy force charge 5 / 20 The property of a nucleus that determines its stability is its ______. neutron-to-proton ratio charge size density 6 / 20 A transformer that increases voltage is called a ______ transformer. step-down step-up power isolating 7 / 20 The distance covered per unit time is called ______. speed velocity displacement acceleration 8 / 20 The magnetic field inside a long solenoid is ______. non-uniform uniform and strong zero none of the above 9 / 20 In the photoelectric effect, increasing the intensity of incident light ______. increases the kinetic energy of emitted electrons increases the number of emitted electrons increases the work function decreases the number of emitted electrons 10 / 20 When a light ray passes from air to glass, it bends towards the ______. air reflected ray normal surface 11 / 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 12 / 20 The type of semiconductor doping that adds extra electrons is called ______. p-type intrinsic n-type extrinsic 13 / 20 The rate of radioactive decay is measured using the quantity called ______. activity frequency half-life all of the above 14 / 20 The velocity of light in a vacuum is approximately ______. 3.0 × 10⁷ m/s 3.0 × 10⁵ m/s 3.0 × 10⁸ m/s 3.0 × 10⁶ m/s 15 / 20 The unit of electric field strength is ______. volt newton newton per coulomb (N/C) ampere 16 / 20 The force between two charges is inversely proportional to the square of the ______. distance between the charges sum of the charges difference of the charges product of the charges 17 / 20 The energy of a photon is directly proportional to its ______. wavelength amplitude speed frequency 18 / 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 double in mass the time taken for the isotope to become stable the time taken for half of the radioactive nuclei to decay 19 / 20 The unit of capacitance is the ______. farad tesla ohm henry 20 / 20 The SI unit of magnetic flux is the ______. weber gauss tesla henry Your score isThe average score is 90% 0% Restart quiz
