JEE  Exam Most Repeated 100 Physics MCQS

  

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Boost your JEE Main and Advanced preparation with our carefully curated list of the 100 Most Repeated Physics MCQs. These questions are handpicked from previous years’ JEE papers, covering key topics like Mechanics, Thermodynamics, Electrodynamics, Modern Physics, and more. Ideal for quick revision, concept strengthening, and time-bound practice, this post is a must-read for every JEE aspirant aiming for a high score in Physics.

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JEE Exam Most Repeated 100 Physics MCQs

✅ Mechanics (Kinematics, Laws of Motion, Work-Energy-Power, Rotational Motion)

1. A projectile is thrown at an angle θ. What is the time of flight?
   (a) $\frac{2u \sin\theta}{g}$

2. A car accelerates from rest at 2 m/s². Time taken to reach 20 m/s is:
   (b) 10 s

3. Newton’s second law is:
   (d) $F = ma$

4. A body of mass m is moving in a circle of radius r at velocity v. Its centripetal force is:
   (c) $\frac{mv^2}{r}$

5. Work done by a conservative force is:
   (a) Path-independent

6. Power is the rate of:
   (b) Doing work

7. Moment of inertia of a solid sphere about its diameter is:
   (d) $\frac{2}{5}MR^2$

8. Torque is given by:
   (a) $\tau = r \times F$

9. A uniform rod pivoted at one end oscillates. Its time period is:
   (c) $2\pi \sqrt{\frac{2L}{3g}}$

10. Conservation of angular momentum is applicable when:
    (b) No external torque acts

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✅ Thermodynamics and Thermal Properties of Matter

11. First law of thermodynamics is:
    (a) $\Delta Q = \Delta U + W$

12. Heat required to change 1 kg ice at 0°C to water at 0°C is:
    (c) $mL$

13. In an adiabatic process:
    (b) No heat is exchanged

14. Efficiency of Carnot engine is:
    (a) $1 - \frac{T_C}{T_H}$

15. Thermal conductivity unit is:
    (d) W/m·K

16. Gas expands isothermally. Work done is:
    (a) $W = nRT \ln \frac{V_f}{V_i}$

17. Entropy is a measure of:
    (c) Disorder

18. Specific heat at constant pressure is:
    (b) Greater than at constant volume

19. Ideal gas equation is:
    (d) $PV = nRT$

20. In a cyclic process, change in internal energy is:
    (a) Zero

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✅ Oscillations and Waves

21. Time period of simple pendulum is:
    (b) $2\pi \sqrt{\frac{L}{g}}$

22. Frequency and period are:
    (d) Inversely related

23. Equation of SHM is:
    (a) $x = A \sin(\omega t + \phi)$

24. Resonance occurs when:
    (c) Driving frequency = natural frequency

25. Speed of sound in air increases with:
    (b) Temperature

26. Intensity is proportional to:
    d) $\text{Amplitude}^2$

27. Doppler effect is due to:
    (a) Relative motion between source and observer

28. Beats are formed due to:
    (b) Superposition of two close frequencies

29. Standing waves have:
    c) Nodes and antinodes

30. A closed pipe has fundamental frequency:
    (d) $\frac{v}{4L}$

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✅ Electrostatics and Current Electricity

31. Coulomb's law constant is:
    (a) $\frac{1}{4\pi\varepsilon_0}$

32. Unit of electric field is:
    (c) N/C

33. Electric field due to a point charge is:
    b) $\frac{kQ}{r^2}$

34. Capacitance of parallel plate capacitor is:
    (a) $\varepsilon_0 \frac{A}{d}$

35. Energy stored in a capacitor:
    (d) $\frac{1}{2}CV^2$

36. Electric potential due to a point charge is:
    (c) $\frac{kQ}{r}$

37. Resistance depends on:
    (a) Length, area, and material

38. Ohm’s law:
    (b) $V = IR$

39. Power in a resistor:
    (c) $P = I^2R$

40. Kirchhoff's second law is based on:
    (d) Conservation of energy

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✅ Magnetism and Electromagnetic Induction

41. Magnetic field inside a solenoid:
    (b) $B = \mu_0 n I$

42. Biot-Savart law gives:
    (c) Magnetic field due to current element

43. Force on a moving charge in magnetic field:
    (a) $q\vec{v} \times \vec{B}$

44. Lenz's law states:
    (d) Induced emf opposes the cause

45. Faraday’s law:
    (b) $\text{emf} = -\frac{d\phi}{dt}$

46. Eddy currents are:
    (a) Circulating currents in conductors

47. Self-inductance unit:
    (c) Henry

48. Mutual inductance is:
    (d) Proportional to coupling

49. Transformer works on:
    (b) Mutual induction

50. Magnetic moment of current loop:
    (a) $IA$

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✅ Optics (Ray and Wave Optics)

51. Reflection law:
    b) Angle of incidence = angle of reflection

52. Refractive index:
    (a) $\frac{c}{v}$

53. Snell’s law is:
    (d) $n_1 \sin\theta_1 = n_2 \sin\theta_2$

54. Total internal reflection occurs when:
    (b) Light moves from denser to rarer medium

55. Lens formula:
    (c) $\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$

56. Power of lens unit:
    (d) Dioptre

57. Young's double slit experiment fringe width:
    (a) $\beta = \frac{\lambda D}{d}$

58. Diffraction occurs when:
    (b) Light bends around obstacle

59. Polarization is property of:
    (c) Transverse waves

60. Optical instruments use:
    (d) Lens and mirror combinations

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✅ Modern Physics (Atoms, Nuclei, Semiconductors, Dual Nature)

61. Energy of photon:
    (a) $E = hf$

62. Photoelectric effect proves:
    (c) Particle nature of light

63. Threshold frequency is:
    (d) Minimum frequency to eject electron

64. de Broglie wavelength:
    (b) $\lambda = \frac{h}{p}$

65. Mass defect leads to:
    (a) Binding energy

66. Nuclear fission is:
    (c) Splitting of heavy nucleus

67. Alpha particle has:
    b) 2 protons and 2 neutrons

68. Half-life is:
    (d) Time to reduce quantity to half

69. Zener diode is used for:
    (c) Voltage regulation

70. Band gap in semiconductors is:
    (a) ~1 eV

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✅ Electromagnetic Waves and Communication

71. EM waves are:
    (a) Transverse and travel at light speed

72. Speed of EM wave:
    (c) $c = \frac{1}{\sqrt{\mu_0\varepsilon_0}}$

73. AM and FM differ in:
    (b) Modulation type

74. Electromagnetic spectrum is arranged by:
    (a) Frequency or wavelength

75. Uses of microwaves:
    d) Radar and communication

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(Continue with 25 more MCQs in part 2? Let me know if you'd like to get it in a PDF or organized format.)

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Great! Let's continue with the remaining 25 MCQs to complete the list of "JEE Exam Most Repeated 100 Physics MCQs". These cover key JEE Physics chapters like Alternating Current, Semiconductor Devices, Communication Systems, and Practical Physics.

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✅ JEE Physics Most Repeated Questions – Continued (76–100)

✅ Alternating Current and AC Circuits

76. The average value of AC over a complete cycle is:
    (a) Zero

77. The RMS value of AC is:
    (b) $\frac{I_0}{\sqrt{2}}$

78. Reactance of an inductor is:
    (c) $X_L = \omega L$

79. Reactance of a capacitor is:
    (d) $X_C = \frac{1}{\omega C}$

80. Resonance in an LCR circuit occurs when:
    (a) $X_L = X_C$

81. Power factor is:
    (b) $\cos \phi$

82. In a purely resistive AC circuit, voltage and current are:
    (d) In phase

83. In a purely inductive circuit, current:
    (a) Lags voltage by 90°

84. In a purely capacitive circuit, current:
    (b) Leads voltage by 90°

85. Impedance of an LCR series circuit is:
    (c) $Z = \sqrt{R^2 + (X_L - X_C)^2}$

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✅ Semiconductors and Electronics

86. Diode allows current to flow:
    (a) In one direction only

87. P-N junction is forward biased when:
    (c) P is connected to positive terminal

88. Function of a rectifier is:
    (d) Convert AC to DC

89. In an n-type semiconductor, majority carriers are:
    (b) Electrons

90. A transistor in active mode acts as:
    (c) Amplifier

91. Logic gate with output HIGH only when both inputs are HIGH:
    (a) AND gate

92. NOT gate inverts:
    (b) 1 to 0 and 0 to 1

93. Output of an OR gate is 1 when:
    (d) Any input is 1

94. The truth table of NAND gate shows output:
    (a) LOW only when both inputs are HIGH

95. Digital signals are:
    (c) Discrete (0 or 1)

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✅ Communication Systems & Practical Physics

96. Modulation is necessary in communication to:
    (b) Reduce antenna size and avoid interference

97. AM stands for:
    (a) Amplitude Modulation

98. Carrier wave frequency in AM is:
    (c) Much higher than signal

99. Optical fibers use:
    (d) Total internal reflection

100. A vernier caliper measures length with precision of:
     (b) 0.01 cm

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