Physics Full Syllabus Mock Test – Set 3Class 11 + 12 Physics1. A block attached to a spring performs SHM on a smooth horizontal surface. If amplitude is doubled, total mechanical energy becomes: Double Four times Eight times UnchangedCorrect Answer: Four times2. A particle moves in a circle of radius 2 m with constant speed 4 m/s. Magnitude of centripetal acceleration is: 2 m/s² 4 m/s² 8 m/s² 16 m/s²Correct Answer: 8 m/s²3. In the following circuit, equivalent resistance between A and B is:2Ω2Ω4ΩAB 2Ω 4Ω 6Ω 8ΩCorrect Answer: 2Ω4. A body projected horizontally from a height h reaches ground in time: √(h/g) h/g 2h/g √(2h/g)Correct Answer: √(2h/g)5. An ideal gas expands isothermally. During the process: Temperature increases Internal energy remains constant Pressure remains constant Heat exchanged is zeroCorrect Answer: Internal energy remains constant6. Two capacitors 2 μF and 4 μF are connected in series across a 12 V battery. Charge on the 2 μF capacitor is: 4 μC 8 μC 16 μC 24 μCCorrect Answer: 16 μC7. A conducting rod of length 0.5 m moves perpendicular to a magnetic field of 0.2 T with speed 4 m/s. Motional emf induced across the rod is:lvB into page× × ×× × × 0.2 V 0.4 V 1.0 V 4.0 VCorrect Answer: 0.4 V8. From the velocity-time graph shown, displacement in 8 s is:t(s)v4820 40 m 60 m 70 m 80 mCorrect Answer: 80 m9. A photon has momentum p. Its energy is: pc² pc p/c p²cCorrect Answer: pc10. A rod of length l rotates about one end with angular velocity ω. Speed of its free end is: l/ω ω/l ωl ω²lCorrect Answer: ωl11. Escape velocity from a planet depends on: Mass of escaping body Mass and radius of planet Density only Shape of bodyCorrect Answer: Mass and radius of planet12. In a series LCR circuit at resonance, power factor is: 1 0 0.5 InfiniteCorrect Answer: 113. Binding energy per nucleon is maximum near: Hydrogen Uranium Helium IronCorrect Answer: Iron14. For the clockwise rectangular cycle shown in P-V diagram, work done by gas in one cycle is:VP3×10⁵1×10⁵13 2 × 10⁵ J 3 × 10⁵ J 4 × 10⁵ J 6 × 10⁵ JCorrect Answer: 4 × 10⁵ J15. SI unit of magnetic flux is: Tesla Henry Weber FaradCorrect Answer: Weber16. Electric field inside a conductor in electrostatic equilibrium is: Zero Maximum Infinite VariableCorrect Answer: Zero17. A source of sound of frequency 680 Hz moves towards a stationary observer with speed 20 m/s. Speed of sound is 340 m/s. Apparent frequency heard by observer is: 640 Hz 680 Hz 700 Hz 722.5 HzCorrect Answer: 722.5 Hz18. Work function of a metal is 3 eV. Light of photon energy 5 eV is incident on it. Maximum kinetic energy of emitted photoelectrons is: 1 eV 2 eV 3 eV 5 eVCorrect Answer: 2 eV19. Unit of self inductance is: Henry Tesla Weber VoltCorrect Answer: Henry20. A convex lens has focal length 20 cm. Its power is: 2 D 3 D 5 D 10 DCorrect Answer: 5 D21. A nucleus emits an α-particle. Its atomic number decreases by: 1 2 3 4Correct Answer: 222. Angular momentum of a system is conserved when net external torque is: Zero Constant non-zero Maximum InfiniteCorrect Answer: Zero23. Radius of first Bohr orbit is approximately: 5.3 Å 1 Å 0.1 Å 0.53 ÅCorrect Answer: 0.53 Å24. In an AC series circuit, condition XL = XC is called: Induction Resonance Polarization RefractionCorrect Answer: Resonance25. Which wave cannot travel in vacuum? Light wave Radio wave Sound wave X-rayCorrect Answer: Sound wave26. SI unit of electric field is: N/C C/N Volt JouleCorrect Answer: N/C27. A transformer works on the principle of: Self induction Electrostatics Rectification Mutual inductionCorrect Answer: Mutual induction28. In the same medium, if wavelength of a wave increases, its frequency: Increases Decreases Remains same Becomes zeroCorrect Answer: Decreases29. The dimensional formula of Planck constant is: MLT⁻² MLT⁻¹ ML²T⁻¹ ML²T⁻²Correct Answer: ML²T⁻¹30. In an intrinsic semiconductor, conductivity increases with: Temperature Pressure Density ResistanceCorrect Answer: Temperature Submit TestRetake Test