Physics MCQs for 2nd Year (Punjab Board)

This page has over 9,300 multiple-choice questions for Physics (2nd Year (Punjab Board)), arranged in 9 chapters and 80 topics. The chapters include Thermal Physics, Simple Harmonic Motion, Physical Optics, Electrostatics and Alternating Current. Every question has four options, an instant answer and, where available, a short explanation.

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Chapters and topics

  • Thermal Physics 6 topics · 725 MCQs
  • Simple Harmonic Motion 9 topics · 1097 MCQs
  • Physical Optics 7 topics · 770 MCQs
  • Electrostatics 10 topics · 1112 MCQs
  • Alternating Current 11 topics · 1262 MCQs
  • Quantum Physics 8 topics · 908 MCQs
  • Nuclear and Particle Physics 8 topics · 959 MCQs
  • Medical Physics 8 topics · 1009 MCQs
  • Space and Environment 13 topics · 1555 MCQs

Sample Physics MCQs

Try these questions, then open the full practice to work through every chapter. Tap “Show the answer” after you choose.

Q1. The ideal gas equation in terms of the number of molecules N is:

  1. PV = Nk/T
  2. PV = NkT
  3. PV = kT/N
  4. P = NkTV
Show the answer

Answer: B. PV = NkT

The correct answer is “PV = NkT”. k is the Boltzmann constant.

Q2. A force of 20 N stretches a spring by 0.25 m. The spring constant is:

  1. 80 N m⁻¹
  2. 5 N m⁻¹
  3. 1.25 N m⁻¹
  4. 0.0125 N m⁻¹
Show the answer

Answer: A. 80 N m⁻¹

The correct answer is “80 N m⁻¹”. k = F/x = 20/0.25 = 80 N m⁻¹.

Q3. Two coherent waves of wavelength 500 nm arrive at a point with a path difference of 1500 nm. At that point the interference is:

  1. constructive
  2. destructive
  3. neither (no interference)
  4. partly constructive
Show the answer

Answer: A. constructive

Path difference = 1500 nm = 6 × λ/2: a whole number of wavelengths.

Q4. The electric potential at a distance of 0.02 m from a point charge of 4 × 10⁻⁹ C (k = 9 × 10⁹ N m² C⁻²) is:

  1. 90000 V
  2. 1800 V
  3. 0.72 V
  4. 3600 V
Show the answer

Answer: B. 1800 V

V = kq/r = 9 × 10⁹ × 4 × 10⁻⁹/0.02 = 1800 V.

Q5. The mean power in a resistive load carrying sinusoidal alternating current is 50 W. The maximum (peak) power is:

  1. 35.4 W
  2. 100 W
  3. 70.7 W
  4. 25 W
Show the answer

Answer: B. 100 W

The correct answer is “100 W”. P_max = 2P_mean.

Q6. The stopping potential in a photoelectric experiment is 0.5 V. The maximum kinetic energy of the photoelectrons in joules is:

  1. 8 × 10⁻¹⁷ J
  2. 3.13 × 10¹⁸ J
  3. 8 × 10⁻²⁰ J
  4. 0.5 J
Show the answer

Answer: C. 8 × 10⁻²⁰ J

(KE)max = eV_s = 1.6 × 10⁻¹⁹ × 0.5 = 8 × 10⁻²⁰ J.

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