Jump to a section

Physics - Units and Dimensions

Practise 37 NEET previous year questions on Units and Dimensions, compiled from papers spanning 2004 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Units and Dimensions has been asked in 22 of the 39 years of NEET papers analysed (1988–2026), with 37 questions in all. 46% of them were easy, 38% moderate and 16% tough. Most of its questions came from 2022, with 4 questions that year. In the last three years (2024–2026) it had 8 questions across 13 papers, about 0.6 per paper.

The chapter's 3 topics are not weighted equally: Dimensions (30 questions, 81%), Units (6 questions, 16%), and Errors of Measurement (1 question, 3%) have been asked the most. Dimensions has also led over the last five years, with 10 questions. Dimensions has produced the most tough questions (6).

  1. 1The speed of light in vacuum is taken as unity. If light takes min s to reach the Earth from the Sun, the distance between the Sun and the E2026 (Cancelled)Units
  2. 2Each side of a metallic cube of mass kg is measured to be cm. Keeping the significant figures in view, the density of the material of the cu2026 (Cancelled)Units
  3. 3Consider that , , b represent Stefan-Boltzmann constant, Boltzmann constant and Wien's displacement law constant, respectively. The dimensio2026 (Re-NEET)Dimensions
  4. 4A balloon is made of a material of surface tension and its inflation outlet (from where gas is filled in it) has small area . It is filled w2025Dimensions
  5. 5A physical quantity is related to four observations and as follows : The percentage errors of measurement in and are and respectively. The p2025Errors of Measurement
  6. 6The quantities which have the same dimensions as those of solid angle are:2024Dimensions
  7. 7A force defined by acts on a particle at a given time . The factor which is dimensionless, if and are constants, is:2024Dimensions
  8. 8The potential energy of a particle moving along -direction varies as . The dimensions of are:2024 (Re-NEET)Dimensions
  9. 9The mechanical quantity, which has dimensions of reciprocal of mass is2023 (Manipur)Dimensions
  10. 10Plane angle and solid angle have:2022 (Phase 1)Dimensions
  11. 11The dimensions MLT A - 2 - 2 belong to the2022 (Phase 1)Dimensions
  12. 12Match List - I with List - II : List - I List - II (a) Gravitational constant (G) (i) L 2 T - 2 (b) Gravitational potential energy (ii) M - 2022 (Phase 1)Dimensions
  13. 13The physical quantity that has the same dimensional formula as pressure is:2022 (Phase 2)Dimensions
  14. 14If E and G respectively denote energy and gravitational constant, then E G has the dimensions of:2021Dimensions
  15. 15If force [ F ] , acceleration [ A ] and time [ T ] are chosen as the fundamental physical quantities. Find the dimensions of energy.2021Dimensions
  16. 16Dimensions of stress are:2020 (Phase 1)Dimensions
  17. 17The unit of thermal conductivity is2019 (All India)Units
  18. 18A physical quantity of the dimensions of length that can be formed out of c , G and e 2 4 0 , where [ c is velocity of light, G is universal2017Dimensions
  19. 19Planck's constant ( h ) , speed of light in a vacuum ( c ) and Newton's gravitational constant ( G ) are three fundamental constants. Which 2016 (Phase 2)Dimensions
  20. 20If energy ( E ) , velocity ( V ) and time ( T ) are chosen as the fundamental quantities, the dimensional formula of surface tension will be2015 (Phase 1)Dimensions
  21. 21If dimensions of critical velocity, v c of a liquid flowing through a tube are expressed as x y r z , where, , and r are the coefficient of 2015 (Phase 2)Dimensions
  22. 22If force F , velocity V and time T are taken as fundamental units, the dimensions of mass are2014Dimensions
  23. 23The pair of quantities having same dimensions is:2013 (Karnataka)Dimensions
  24. 24The dimensions of are2012 (Mains)Dimensions
  25. 25The damping force on an oscillator is directly proportional to the velocity. The units of the constant of proportionality are2012 (Screening)Units
  26. 26The density of material in CGS system of units is . In a system of units in which unit of lengths is and unit of mass is , the value of dens2011 (Mains)Units
  27. 27The dimensions of are2011 (Screening)Dimensions
  28. 28The dimension of , where is permittivity of free space and is electric field, is2010 (Screening)Dimensions
  29. 29If the dimensions of a physical quantity are given by , then the physical quantity will be :2009 (Mains)Dimensions
  30. 30If the dimensions of a physical quantity are given by , then the physical quantity will be2009 (Screening)Dimensions
  31. 31Which two of the following five physical parameters have the same dimensions? (a) energy density (b) refractive index (c) dielectric constan2008 (Mains)Dimensions
  32. 32Which two of the following five physical parameters have the same dimensions? (1) energy density (2) refractive index (3) dielectric constan2008 (Screening)Dimensions
  33. 33Dimensions of resistance in an electrical circuit, in terms of dimension of mass , of length , of time and of current , would be2007Dimensions
  34. 34The velocity of a particle at time is given by , where and are constants. The dimensions of and are:2006Dimensions
  35. 35The ratio of the dimension Planck's constant and that of moment of inertia is the dimension of:2005Dimensions
  36. 36The unit of permittivity of free space , is:2004Units
  37. 37The dimensions of universal gravitational constant are:2004Dimensions

Frequently Asked Questions

1.How many questions are available for Units and Dimensions?

This chapter includes 37 questions compiled from NEET papers spanning 2004 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Units and Dimensions chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Units and Dimensions an important chapter for NEET Physics?

Units and Dimensions has appeared in 22 of the 25 years of NEET papers covered here, with 37 questions across 30 papers - about one per paper it appears in.

4.What is the difficulty level of Units and Dimensions questions in NEET?

Of the 37 questions analysed for this chapter, 46% are easy, 38% moderate and 16% tough. 2022 had the most, with 4 questions.

5.Which topics in Units and Dimensions should I focus on?

These topics have carried the most weightage in Units and Dimensions:

  • Dimensions - 30 questions (81%)
  • Units - 6 questions (16%)
  • Errors of Measurement - 1 question (3%)
  • Dimensions has produced the most tough questions (6).
6.Is Units and Dimensions's weightage in NEET going up or down?

Across all 30 papers analysed, Units and Dimensions has averaged about 1.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.