Physics
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Physics questions with answers

2,629 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

  1. Which one of the following statements is not correct ?Asked in UPSC NDA 2 2016
  2. The symbol of SI unit of inductance is H. It stands forAsked in UPSC NDA 2 2017
  3. Which one of the following is NOT the unit of energy ?Asked in UPSC NDA 2 2020
  4. The S.I unit of gravitational constant G isAsked in TNPSC CS Prelims 2015
  5. Dioptre is the SI unit of :Asked in UPSC CISF AC EXE 2022
  6. Match List–I with List–II and select the correct answer using the code given below the lists : List–I List–II (a) Wavelength 1. Hertz (b) Energy 2. Angstrom (c) Intensity of sound 3. Joule (d) Frequency 4. DecibelAsked in UPPCS Prelims 2008
  7. Match List-I with List-II and select the correct answer from the code given below the lists : List I List II (Physical quantities) (Units)Asked in UPPCS Prelims 2005
  8. Match List I (Quantity) with List II (Units) and select the correct answer using the codes given below the Lists: List I List II (Quantity) (Units) I. High speed A) Mach II. Wavelength B) Angstrom III. Pressure C) Pascal IV. Energy D) Joule Codes:Asked in UPPCS Prelims 1999
  9. One hectare cm (1 ha.cm.) water is equal toAsked in Agri. Officer 2020
  10. The unit of linear momentum isAsked in ae 2020
  11. The unit of spring constant isAsked in ae 2024
  12. Unit of magnetic flux :Asked in lower devision clerk 2025
  13. Which one of the following physical quantities has the same dimensions as that of Planck's constant h?Asked in UPSC CDS 2 2016
  14. The dimension of dielectric constant iAsked in CGPSC Prelims Exam 2024
  15. Which one of the following quantities is dimensionless?Asked in UPSC Geoscientist 2023
  16. Which one of the following expressions has dimensions of energy (here V is the voltage across a resistor of resistance R and I is the current through the resistor, and t is the time)?Asked in UPSC Geoscientist 2023
  17. The unit of the ratio between thrust and impulse is same as that ofAsked in UPSC NDA 2 2021
  18. Which of the following sets have different dimensions?Asked in TNPSC CS Prelims 2015
  19. Which one of the following pairs of quantities has no length in their dimension?Asked in UPSC CISF AC EXE 2019
  20. In terms of basic units of mass (M), length (L) and time (T), dimension of energy isAsked in WBCS Main Paper 4 2021
  21. In which of the following pairs, the two physical quantities have different dimensions?Asked in WBCS Main Paper 4 2019
  22. Euler's number has the dimensions asAsked in Local Self Government Dept. Exam 2022
  23. The dimension of angular impulse isAsked in ae 2024
  24. Time is equivalent to A) distance by velocity B) velocity by distance C) distance multiplied by velocity D) velocity multiplied by distanceAsked in APPSCCE 2020 Prelims 2020
  25. Pressure has the same dimension asAsked in ASO 2025