Neet Physics 100 Mcqs

Looking to boost your NEET Physics preparation? Our carefully curated NEET Physics 100 MCQs post provides a comprehensive set of multiple choice questions designed to match the latest NEET 2025 syllabus. These high-quality questions cover all essential topics including Mechanics, Thermodynamics, Electrodynamics, Modern Physics, and more. Perfect for NEET aspirants aiming to score high in the Physics section, this resource offers detailed solutions and explanations to strengthen your concepts. Practice now to improve speed, accuracy, and conceptual clarity.

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🧪 NEET Physics 100 MCQs (With Answers) | Best Physics Questions for NEET Exam Preparation

These NEET Physics MCQs cover crucial chapters like Mechanics, Thermodynamics, Electrostatics, Magnetism, Modern Physics, Waves, Optics, and more. Perfect for NEET aspirants seeking practice questions for Physics.

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📘 Physics Class 11 MCQs – NEET Chapterwise Questions

📍 Chapter: Units & Measurements

1. Which of the following is a fundamental unit?
   A) Newton
   B) Pascal
   C) Kilogram
   D) Joule
   Answer: C

2. Which device is used for measuring very small lengths accurately?
   A) Thermometer
   B) Vernier caliper
   C) Screw gauge
   D) Barometer
   Answer: C

3. Dimensional formula of force is:
   A) [MLT^-2]
   B) [ML^2T^-2]
   C) [MT^-2]
   D) [L^2T^-2]
   Answer: A

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📍 Chapter: Kinematics

4. A body is thrown vertically upward. At the highest point, its:
   A) Velocity is zero, acceleration is zero
   B) Velocity is zero, acceleration is not zero
   C) Velocity is not zero, acceleration is zero
   D) Velocity and acceleration both are not zero
   Answer: B

5. Which quantity is a vector?
   A) Speed
   B) Distance
   C) Displacement
   D) Mass
   Answer: C

6. An object moves in a circle with constant speed. Which is true?
   A) Velocity is constant
   B) Acceleration is zero
   C) Direction of motion changes
   D) Angular velocity is zero
   Answer: C

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📍 Chapter: Laws of Motion

7. A passenger in a moving bus falls forward when the bus stops suddenly. This is due to:
   A) Inertia of rest
   B) Inertia of motion
   C) Newton's third law
   D) Conservation of energy
   Answer: B

8. A body is in equilibrium when:
   A) Only net force is zero
   B) Only net torque is zero
   C) Net force and net torque are zero
   D) Neither force nor torque is zero
   Answer: C

9. A body of mass 5 kg is acted upon by a force of 20 N. What is its acceleration?
   A) 2 m/s²
   B) 3 m/s²
   C) 4 m/s²
   D) 5 m/s²
   Answer: C

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📍 Chapter: Work, Energy, Power

10. The SI unit of work is:
    A) Joule
    B) Watt
    C) Erg
    D) Calorie
    Answer: A

11. Kinetic energy of a body depends on:
    A) Mass only
    B) Velocity only
    C) Both mass and velocity
    D) Acceleration
    Answer: C

12. 1 horsepower = ?
    A) 746 W
    B) 1 kW
    C) 100 W
    D) 764 W
    Answer: A

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📍 Chapter: Gravitation

13. The value of acceleration due to gravity at the Earth's center is:
    A) 9.8 m/s²
    B) 4.9 m/s²
    C) Zero
    D) Infinity
    Answer: C

14. Gravitational potential energy is always:
    A) Positive
    B) Zero
    C) Negative
    D) Depends on height
    Answer: C

15. Escape velocity of a body from Earth's surface is approximately:
    A) 11.2 km/s
    B) 7.9 km/s
    C) 9.8 km/s
    D) 8.2 km/s
    Answer: A

    

📍 Chapter: Thermodynamics

16. Which of the following is a state function?
    A) Work
    B) Heat
    C) Internal energy
    D) All of the above
    Answer: C

17. First law of thermodynamics is a restatement of:
    A) Conservation of momentum
    B) Conservation of energy
    C) Conservation of mass
    D) Newton's second law
    Answer: B

18. In an adiabatic process, heat exchange is:
    A) Maximum
    B) Zero
    C) Infinite
    D) Constant
    Answer: B

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📍 Chapter: Oscillations & Waves

19. A simple harmonic motion has acceleration proportional to:
    A) Velocity
    B) Displacement
    C) Time
    D) Mass
    Answer: B

20. Frequency of a pendulum depends on:
    A) Mass of the bob
    B) Length of pendulum
    C) Amplitude
    D) Gravity only
    Answer: B

21. Sound travels fastest in:
    A) Air
    B) Water
    C) Vacuum
    D) Steel
    Answer: D

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📍 Chapter: Electrostatics

22. Coulomb’s law is applicable for:
    A) Charges in motion
    B) Charges at rest
    C) Magnetic poles
    D) Current carrying wires
    Answer: B

23. Unit of electric field is:
    A) Volt
    B) Coulomb
    C) Volt/meter
    D) Newton
    Answer: C

24. Electric potential is a:
    A) Scalar quantity
    B) Vector quantity
    C) Tensor
    D) Depends on charge
    Answer: A

25. Work done in moving a charge on an equipotential surface is:
    A) Maximum
    B) Minimum
    C) Zero
    D) Depends on the charge
    Answer: C

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📍 Chapter: Current Electricity

26. Ohm’s law is not applicable for:
    A) Resistors
    B) Electrolytes
    C) Metals
    D) Wires at constant temperature
    Answer: B

27. SI unit of resistivity is:
    A) Ohm
    B) Ohm-meter
    C) Volt
    D) Ampere
    Answer: B

28. A wire has resistance R. If it is stretched to double its length, its resistance becomes:
    A) R/2
    B) 2R
    C) 4R
    D) R
    Answer: C

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📍 Chapter: Magnetic Effects of Current

29. Magnetic field due to a long straight current-carrying wire is:
    A) Radial
    B) Circular
    C) Linear
    D) Tangential
    Answer: B

30. Unit of magnetic flux is:
    A) Weber
    B) Tesla
    C) Henry
    D) Farad
    Answer: A

31. Force on a current-carrying conductor in a magnetic field is given by:
    A) F = qvB
    B) F = BIL sinθ
    C) F = IL/R
    D) F = qE
    Answer: B

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📍 Chapter: Electromagnetic Induction

32. Lenz’s law is based on:
    A) Conservation of energy
    B) Conservation of charge
    C) Conservation of momentum
    D) Ampere’s law
    Answer: A

33. Self-inductance of a coil depends on:
    A) Current
    B) Voltage
    C) Magnetic field
    D) Geometry of the coil
    Answer: D

34. Faraday’s law is related to:
    A) Electric field
    B) Magnetic force
    C) Induced emf
    D) Capacitance
    Answer: C

    

📍 Chapter: Ray Optics

35. Which lens is used to correct myopia?
    A) Convex lens
    B) Concave lens
    C) Cylindrical lens
    D) Plano-convex lens
    Answer: B

36. Image formed by a plane mirror is:
    A) Real and inverted
    B) Virtual and erect
    C) Virtual and inverted
    D) Real and erect
    Answer: B

37. Focal length of a concave mirror is:
    A) Always positive
    B) Always negative
    C) Zero
    D) Depends on object distance
    Answer: B

38. The mirror formula is:
    A) 1/f = 1/u + 1/v
    B) 1/f = 1/v − 1/u
    C) 1/f = 2/u + v
    D) f = uv/(u+v)
    Answer: B

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📍 Chapter: Wave Optics

39. Diffraction is significant when the obstacle is:
    A) Much larger than wavelength
    B) Equal to the wavelength
    C) Much smaller than wavelength
    D) Not related to wavelength
    Answer: B

40. In Young’s double slit experiment, the central fringe is always:
    A) Dark
    B) Bright
    C) Depends on wavelength
    D) Depends on slit width
    Answer: B

41. The fringe width in YDSE increases when:
    A) Wavelength decreases
    B) Distance between slits increases
    C) Screen distance increases
    D) Slit separation decreases
    Answer: C

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📍 Chapter: Modern Physics

42. Photoelectric effect proves the:
    A) Wave nature of light
    B) Particle nature of light
    C) Reflection of light
    D) Polarization
    Answer: B

43. Threshold frequency is the minimum frequency required to:
    A) Emit photon
    B) Emit neutron
    C) Emit electron
    D) Excite nucleus
    Answer: C

44. Einstein’s photoelectric equation is:
    A) E = mc²
    B) KE = hν − ϕ
    C) KE = eV
    D) p = mv
    Answer: B

45. Which of the following particles has the highest charge-to-mass ratio?
    A) Proton
    B) Electron
    C) Alpha particle
    D) Neutron
    Answer: B

46. The half-life of a radioactive element is the time in which:
    A) Mass becomes zero
    B) Activity becomes zero
    C) Half the nuclei decay
    D) Energy doubles
    Answer: C

47. Which emission causes no change in mass number or atomic number?
    A) Alpha
    B) Beta
    C) Gamma
    D) Neutron
    Answer: C

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📍 Chapter: Alternating Current

48. The average value of AC over one full cycle is:
    A) Maximum
    B) Zero
    C) Equal to DC
    D) Infinity
    Answer: B

49. In an ideal inductor, the current:
    A) Leads voltage by 90°
    B) Lags voltage by 90°
    C) Is in phase with voltage
    D) Is zero
    Answer: B

50. Impedance of an LCR circuit is minimum at:
    A) Zero frequency
    B) Resonance
    C) High frequency
    D) Low frequency
    Answer: B

51. Power factor in a purely resistive circuit is:
    A) 0
    B) 0.5
    C) 1
    D) Depends on frequency
    Answer: C

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📍 Chapter: Semiconductor Electronics

52. A semiconductor has conductivity between:
    A) Conductor and insulator
    B) Metal and non-metal
    C) Two insulators
    D) Two conductors
    Answer: A

53. The charge carriers in a p-type semiconductor are:
    A) Electrons
    B) Holes
    C) Neutrons
    D) Protons
    Answer: B

54. The depletion region in a PN junction is formed due to:
    A) Movement of free electrons
    B) Recombination of charge carriers
    C) External voltage
    D) Doping
    Answer: B

55. Zener diode is used for:
    A) Amplification
    B) Rectification
    C) Voltage regulation
    D) Switching
    Answer: C

56. A logic gate that gives a high output only when all inputs are high is:
    A) OR
    B) AND
    C) NOR
    D) XOR
    Answer: B

57. Binary number 1101 is equal to which decimal number?
    A) 11
    B) 12
    C) 13
    D) 14
    Answer: C

    

📍 Chapter: Electromagnetic Waves

58. Electromagnetic waves are:
    A) Longitudinal only
    B) Transverse only
    C) Both longitudinal and transverse
    D) Static in nature
    Answer: B

59. The speed of EM waves in a vacuum is:
    A) $3 \times 10^8 \, \text{m/s}$
    B) $1.5 \times 10^8 \, \text{m/s}$
    C) $3 \times 10^6 \, \text{m/s}$
    D) Infinity
    Answer: A

60. Which EM wave has the highest frequency?
    A) Gamma rays
    B) X-rays
    C) UV rays
    D) Infrared
    Answer: A

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📍 Chapter: Dual Nature of Matter and Radiation

61. De Broglie wavelength is inversely proportional to:
    A) Frequency
    B) Energy
    C) Mass
    D) Momentum
    Answer: D

62. Photoelectric emission occurs when:
    A) Light falls below threshold frequency
    B) Energy of incident photon is greater than work function
    C) Only gamma rays are used
    D) High temperature is used
    Answer: B

63. The particle with no rest mass is:
    A) Electron
    B) Proton
    C) Photon
    D) Neutron
    Answer: C

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📍 Chapter: Atoms and Nuclei

64. Rutherford’s model could not explain:
    A) Atomic nucleus
    B) Atomic mass
    C) Stability of atoms
    D) Scattering of alpha particles
    Answer: C

65. Mass defect is responsible for:
    A) Loss of charge
    B) Radioactivity
    C) Binding energy
    D) Fusion only
    Answer: C

66. Which of the following has the least penetration power?
    A) Alpha particles
    B) Beta particles
    C) Gamma rays
    D) X-rays
    Answer: A

67. Nuclear fusion occurs:
    A) Spontaneously on Earth
    B) At low temperature
    C) In stars
    D) Without energy requirement
    Answer: C

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📍 Chapter: Communication Systems

68. Amplitude modulation involves variation of:
    A) Frequency
    B) Amplitude
    C) Phase
    D) Wavelength
    Answer: B

69. Antenna height affects:
    A) Transistor speed
    B) Range of transmission
    C) Current flow
    D) Resonance
    Answer: B

70. In digital communication, data is sent in:
    A) Continuous waves
    B) Analog format
    C) Binary form
    D) Ultrasonic form
    Answer: C

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📍 Mixed Conceptual MCQs

71. Which of the following pairs are dimensionally consistent?
    A) Energy & Force
    B) Work & Torque
    C) Momentum & Power
    D) Force & Pressure
    Answer: B

72. The SI unit of Planck’s constant is:
    A) J
    B) J·s
    C) eV
    D) N·s
    Answer: B

73. The motion of a charged particle in a magnetic field is:
    A) Linear
    B) Circular
    C) Oscillatory
    D) Random
    Answer: B

74. Which law is the basis for transformers?
    A) Gauss's law
    B) Lenz's law
    C) Faraday's law
    D) Ampere's law
    Answer: C

75. Bohr’s quantization condition refers to:
    A) Energy
    B) Momentum
    C) Angular momentum
    D) Wavelength
    Answer: C

76. Electric lines of force never intersect because:
    A) They are imaginary
    B) Each point has a unique field direction
    C) Charge is scalar
    D) Field is zero where they meet
    Answer: B

77. Which has the highest binding energy per nucleon?
    A) Hydrogen
    B) Uranium
    C) Iron
    D) Helium
    Answer: C

78. The ratio of electron to proton charge is:
    A) 0
    B) Infinite
    C) 1
    D) −1
    Answer: C (they have equal magnitude)

79. Which instrument is used to measure potential difference?
    A) Galvanometer
    B) Ammeter
    C) Voltmeter
    D) Multimeter
    Answer: C

80. If two resistors of 6Ω and 3Ω are connected in parallel, the net resistance is:
    A) 9Ω
    B) 2Ω
    C) 1Ω
    D) 4.5Ω
    Answer: B

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📍 Final NEET Physics Practice Questions

81. In projectile motion, the horizontal velocity:
    A) Increases
    B) Decreases
    C) Remains constant
    D) Becomes zero at max height
    Answer: C

82. Capacitance increases if distance between plates is:
    A) Increased
    B) Decreased
    C) Doubled
    D) Made infinite
    Answer: B

83. SI unit of power is:
    A) Watt
    B) Joule
    C) Newton
    D) Pascal
    Answer: A

84. In elastic collision, total energy is:
    A) Increased
    B) Reduced
    C) Conserved
    D) Converted to heat
    Answer: C

85. Which law is violated in pair production?
    A) Charge conservation
    B) Energy conservation
    C) Momentum conservation
    D) None
    Answer: D

86. Which device stores electrical energy?
    A) Transistor
    B) Capacitor
    C) Diode
    D) Ammeter
    Answer: B

87. When current flows through a wire, it produces:
    A) Sound
    B) Electric field only
    C) Magnetic field only
    D) Electric & magnetic fields
    Answer: D

88. The turning effect of force is called:
    A) Torque
    B) Power
    C) Work
    D) Impulse
    Answer: A

89. Which law defines direction of induced current?
    A) Faraday’s
    B) Ampere’s
    C) Lenz’s
    D) Ohm’s
    Answer: C

90. Which quantity is conserved in inelastic collision?
    A) Kinetic energy
    B) Momentum
    C) Speed
    D) Velocity
    Answer: B

91. A body in uniform circular motion has:
    A) Constant velocity
    B) Constant speed
    C) Zero acceleration
    D) No force acting
    Answer: B

92. Direction of electric field is from:
    A) Positive to negative
    B) Negative to positive
    C) High potential to low
    D) Ground to charge
    Answer: A

93. Which of the following has no unit?
    A) Power
    B) Refractive index
    C) Work
    D) Momentum
    Answer: B

94. In an ideal gas, internal energy depends on:
    A) Pressure
    B) Volume
    C) Temperature
    D) Number of moles only
    Answer: C

95. Total mechanical energy in SHM is:
    A) Variable
    B) Constant
    C) Zero
    D) Maximum at equilibrium
    Answer: B

96. A battery converts:
    A) Mechanical to chemical
    B) Electrical to mechanical
    C) Chemical to electrical
    D) Electrical to heat
    Answer: C

97. Ohm's law shows a linear relationship between:
    A) Resistance and voltage
    B) Current and time
    C) Current and voltage
    D) Power and resistance
    Answer: C

98. Unit of magnetic field strength is:
    A) Ampere
    B) Volt
    C) Tesla
    D) Weber
    Answer: C

99. A scalar quantity among the following is:
    A) Force
    B) Torque
    C) Work
    D) Acc

100. Which of the following is not a conservative force?
     A) Gravitational force
     B) Electrostatic force
     C) Frictional force
     D) Spring force
     Answer: C

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