Physics Full Syllabus Mock Test – Set 3

Class 11 + 12 Physics

1. A block attached to a spring performs SHM on a smooth horizontal surface. If amplitude is doubled, total mechanical energy becomes:
Correct Answer: Four times
2. A particle moves in a circle of radius 2 m with constant speed 4 m/s. Magnitude of centripetal acceleration is:
Correct Answer: 8 m/s²
3. In the following circuit, equivalent resistance between A and B is:
AB
Correct Answer: 2Ω
4. A body projected horizontally from a height h reaches ground in time:
Correct Answer: √(2h/g)
5. An ideal gas expands isothermally. During the process:
Correct Answer: Internal energy remains constant
6. Two capacitors 2 μF and 4 μF are connected in series across a 12 V battery. Charge on the 2 μF capacitor is:
Correct Answer: 16 μC
7. 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× × ×× × ×
Correct Answer: 0.4 V
8. From the velocity-time graph shown, displacement in 8 s is:
t(s)v4820
Correct Answer: 80 m
9. A photon has momentum p. Its energy is:
Correct Answer: pc
10. A rod of length l rotates about one end with angular velocity ω. Speed of its free end is:
Correct Answer: ωl
11. Escape velocity from a planet depends on:
Correct Answer: Mass and radius of planet
12. In a series LCR circuit at resonance, power factor is:
Correct Answer: 1
13. Binding energy per nucleon is maximum near:
Correct Answer: Iron
14. For the clockwise rectangular cycle shown in P-V diagram, work done by gas in one cycle is:
VP3×10⁵1×10⁵13
Correct Answer: 4 × 10⁵ J
15. SI unit of magnetic flux is:
Correct Answer: Weber
16. Electric field inside a conductor in electrostatic equilibrium is:
Correct Answer: Zero
17. 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:
Correct Answer: 722.5 Hz
18. 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:
Correct Answer: 2 eV
19. Unit of self inductance is:
Correct Answer: Henry
20. A convex lens has focal length 20 cm. Its power is:
Correct Answer: 5 D
21. A nucleus emits an α-particle. Its atomic number decreases by:
Correct Answer: 2
22. Angular momentum of a system is conserved when net external torque is:
Correct Answer: Zero
23. Radius of first Bohr orbit is approximately:
Correct Answer: 0.53 Å
24. In an AC series circuit, condition XL = XC is called:
Correct Answer: Resonance
25. Which wave cannot travel in vacuum?
Correct Answer: Sound wave
26. SI unit of electric field is:
Correct Answer: N/C
27. A transformer works on the principle of:
Correct Answer: Mutual induction
28. In the same medium, if wavelength of a wave increases, its frequency:
Correct Answer: Decreases
29. The dimensional formula of Planck constant is:
Correct Answer: ML²T⁻¹
30. In an intrinsic semiconductor, conductivity increases with:
Correct Answer: Temperature

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