Physics Tech MCQs for 10th Class (Punjab Board)

This page has over 1,600 multiple-choice questions for Physics Tech (10th Class (Punjab Board)), arranged in 10 chapters and 14 topics. The chapters include Thermal Physics, Transfer of Thermal Energy, Waves, Sound and Light. Every question has four options, an instant answer and, where available, a short explanation.

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Chapters and topics

  • Thermal Physics 2 topics · 213 MCQs
  • Transfer of Thermal Energy 1 topic · 110 MCQs
  • Waves 1 topic · 117 MCQs
  • Sound 1 topic · 111 MCQs
  • Light 2 topics · 204 MCQs
  • Electrostatics 1 topic · 101 MCQs
  • Electricity 3 topics · 351 MCQs
  • Electromagnetism 1 topic · 140 MCQs
  • Electromagnetic Induction 1 topic · 175 MCQs
  • Nuclear Physics 1 topic · 163 MCQs

Sample Physics Tech MCQs

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

Q1. 84000 J of heat is given to 0.5 kg of water (c = 4200 J kg⁻¹ K⁻¹). The rise in temperature is:

  1. 10 °C
  2. 40 °C
  3. 20 °C
  4. 80 °C
Show the answer

Answer: B. 40 °C

The correct answer is “40 °C”. ΔT = Q/(mc) = 84000/(0.5×4200) = 40 °C.

Q2. Which of these is NOT mainly an example of radiation?

  1. heat from a light bulb felt at a distance
  2. feeling warmth from a fire across a room
  3. walking barefoot on a hot road
  4. an infrared thermometer measuring body temperature
Show the answer

Answer: C. walking barefoot on a hot road

Walking barefoot on a hot road: conduction.

Q3. A wave travels at 20 m/s with frequency 100 Hz. Its wavelength is:

  1. 0.4 m
  2. 0.2 m
  3. 5 m
  4. 2000 m
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Answer: B. 0.2 m

The correct answer is “0.2 m”. λ = v/f = 20/100 = 0.2 m.

Q4. A ship's sonar pulse returns after 1 s. If sound travels at 1530 m/s in sea water, the depth of the sea is:

  1. 1530 m
  2. 7650 m
  3. 765 m
  4. 383 m
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Answer: C. 765 m

The correct answer is “765 m”. Depth = vt/2 = 1530×1/2 = 765 m.

Q5. The refractive index of glycerine is 1.47. The speed of light in glycerine is:

  1. 4.41 × 10⁸ m/s
  2. 2.04 × 10⁸ m/s
  3. 3 × 10⁸ m/s
  4. 4.08 × 10⁸ m/s
Show the answer

Answer: B. 2.04 × 10⁸ m/s

The correct answer is “2.04 × 10⁸ m/s”. v = c/n = 3×10⁸/1.47 = 2.04 × 10⁸ m/s.

Q6. Electrically, salt water is a/an:

  1. superconductor
  2. conductor
  3. magnet
  4. insulator
Show the answer

Answer: B. conductor

The correct answer is “conductor”. Salt water: conductor.

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