AM Physics Test 4 Leave a Comment / By fawadtwopointo@gmail.com / August 23, 2025 Welcome to your AM Physics Test 4 The frequency of a simple pendulum depends on: Amplitude of oscillation Length and acceleration due to gravity Length of pendulum only Mass of bob only None A body executes SHM with amplitude 5 cm. Its maximum velocity is 20 cm/s. The frequency is: 0.64 Hz 0.5 Hz 0.75 Hz 1 Hz None The ratio of specific heats (Cp/Cv) for monoatomic gases is: 1.4 2.0 1.33 1.67 None The efficiency of a Carnot engine depends upon: Heat capacity of source Temperature of source and sink Entropy only Working substance None In an adiabatic process: Pressure is constant Temperature is constant No heat is exchanged Heat is constant None Which law states that entropy of universe always increases? Second law of thermodynamics Zeroth law Newton’s law First law of thermodynamics None A transformer works on: DC only Electrostatic induction Both AC and DC AC only None The unit of magnetic flux is: Henry Tesla Weber Farad None Which law explains the direction of induced emf? Coulomb’s law Faraday’s law Ohm’s law Lenz’s law None In an RLC circuit at resonance: Impedance is maximum Current is minimum Impedance = Resistance Power factor is zero None Photon has: Mass only Both mass and charge Charge only Energy and momentum None Which experiment proved wave nature of electron? Rutherford’s experiment Millikan’s experiment Stern-Gerlach experiment Davisson-Germer experiment None The energy of a photon is given by: mc² hv eV ½mv² None Which of the following is not a nuclear particle? Electron Neutron Photon proton None The half-life of a radioactive isotope is independent of: All of these Pressure Temperature Chemical state None The uncertainty principle relates: Position and momentum Mass and energy Energy and time Both A and B None Which equation governs blackbody radiation? Stefan’s law Wien’s law Boyle’s law Planck’s law None The SI unit of electric field is: C N·m²/C² V/m Joule None Bohr’s model explains: Compton scattering Zeeman effect hotoelectric effect Hydrogen spectrum None The work function of a metal is 2 eV. The threshold frequency is: (h = 6.63×10⁻³⁴ Js, 1 eV = 1.6×10⁻¹⁹ J) 4.8×10¹⁴ Hz 1.2×10¹³ Hz 3.2×10¹⁵ Hz 6.0×10¹⁴ Hz None The Compton effect shows: Wave nature of light None Particle nature of light Both wave and particle None The de Broglie wavelength of electron accelerated by V volts is: λ = h/√(2meV) λ = hc/eV λ = h/mV λ = h/p² None The nuclear force is: Long range Infinite range Short range None None LASER light is: Polychromatic and coherent Natural spectrum Monochromatic and coherent Incoherent None Superconductivity occurs when: Resistance becomes zero Magnetism increases Voltage doubles Resistance increases None Hall effect helps to determine: Type of charge carrier Magnetic susceptibility Mass of electron Current density None The time period of a mass-spring system is: 2π√(k/m) 2π√(m/k) √(m/k) m/k None The pressure exerted by an ideal gas is due to: Vibrational energy Random motion of molecules Gravitational pull Cohesive force None X-rays are produced when: Protons collide with electrons Electrons fall into orbit Electrons collide with nucleus Atoms split None Which particle has zero rest mass? Neutron Neutrino Photon Proton None 1 out of 1 Time's upTime is Up!
