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Physics - Units and Dimensions

Practise 59 TS EAMCET previous year questions on Units and Dimensions, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty TS EAMCET tests.

Units and Dimensions has been asked in 20 of the 24 years of TS EAMCET papers analysed (2001–2024), with 59 questions in all. 78% of them were easy, 17% moderate and 5% tough. Most of its questions came from 2023, with 8 questions that year. In the last three years (2022–2024) it had 18 questions across 17 papers, about 1.1 per paper.

The chapter's 3 topics are not weighted equally: Dimensions (35 questions, 59%), Units (21 questions, 36%), and Errors of Measurement (3 questions, 5%) have been asked the most. Over the last five years the most frequent topics have been Units (14), Dimensions (14), and Errors of Measurement (3). Dimensions has produced the most tough questions (3).

  1. 1In an experiment, the coefficient of viscosity (in mPa s) of a liquid was determined as 2.62, 2.68, 2.58, 2.57, 2.54 and 2.55. The mean abso04 May, 2025 (M)Errors of Measurement
  2. 2The error in the measurement of force acting normally on a square plate is . If the error in the measurement of the side of the plate is , t04 May, 2025 (E)Errors of Measurement
  3. 3The phenomenon of physics that deals with the constitution and structure of matter at the minute scales of atoms and nuclei is03 May, 2025 (M)Units
  4. 4If the length of a rod is measured as 830600 mm, then the number of significant figures in the measurement is03 May, 2025 (M)Units
  5. 5A piece of length 3.532 m is cut from a rod of length 43.4 m. The length of the remaining rod in metre is (up to correct significant figures03 May, 2025 (E)Errors of Measurement
  6. 6If and C are three different physical quantities with different dimensional formulae, then the combination which can never give a proper phy02 May, 2025 (M)Dimensions
  7. 7If L and C are inductance and capacitance respectively, then the dimensional formula of is02 May, 2025 (E)Dimensions
  8. 8Which of the following statements regarding nature of physical laws is NOT correct?11 May, 2024 (M)Units
  9. 9The equation of motion of a damped oscillator is given by . The dimensional formula of is09 May, 2024 (M)Dimensions
  10. 10The related effort to derive the properties of a bigger, more complex system from the properties and interactions of its constituent simpler09 May, 2024 (E)Units
  11. 11The ratio of the relative strengths of strong and weak nuclear forces is14 May, 2023 (M)Units
  12. 12Match the following. (Take the relative strength of the strongest fundamental forces in nature as one)14 May, 2023 (E)Units
  13. 13Velocities (V) and accelerations (a) in two systems of units 1 and 2 are related as and respectively. Here and are constants. Dimensionally 13 May, 2023 (M)Dimensions
  14. 14The ratio of relative strengths of the gravitational force and the electromagnetic force between two charged particles is13 May, 2023 (E)Units
  15. 15The efficiency of an engine is given by , where and are constants. If is the absolute temperature, - Boltzmann constant, -angular displaceme13 May, 2023 (E)Dimensions
  16. 16If and are the relative strengths of the gravitational, the weak nuclear and the electromagnetic forces respectively, then12 May, 2023 (M)Units
  17. 17Which of the following pairs has same dimensions?12 May, 2023 (M)Dimensions
  18. 18If and are the relative strengths of the gravitational and weak nuclear forces respectively, then is nearly12 May, 2023 (E)Units
  19. 19If the velocity of light , the gravitational constant and Planck's constant are chosen as the fundamental units, the dimension of density in20 Jul, 2022 (M)Dimensions
  20. 20Which of the following is the unit of mobility of a electron in a conductor?20 Jul, 2022 (E)Dimensions
  21. 21Select the physical quantities in Column-I and Column-II having same dimensions. The correct answer is19 Jul, 2022 (E)Dimensions
  22. 22Choose the correct statement from following.18 Jul, 2022 (M)Dimensions
  23. 23If E and E 0 denote energies at time t and t 0 respectively, and L and L 0 distance from some point at t and t 0 respectively, then which of18 Jul, 2022 (M)Dimensions
  24. 24Which of the following interaction is responsible for beta decay?18 Jul, 2022 (E)Units
  25. 25In a RC circuit, where R is resistance and C is capacitance which of the following has the dimension of time.18 Jul, 2022 (E)Dimensions
  26. 26Which of the following is not a fundamental force in nature?06 Aug, 2021 (E)Units
  27. 27The height of transmitting antenna if TV programs have to cover the population in area of radius 64 km is [Use Radius of earth = 6 . 4 10 6 05 Aug, 2021 (M)Units
  28. 28Which of the following statement is correct?05 Aug, 2021 (E)Dimensions
  29. 29A carrier wave of peak voltage 15 V is used to transmit a message signal. What should be the peak voltage of the modulating signal in order 05 Aug, 2021 (E)Units
  30. 30Two ammeters A 1 and A 2 are connected as shown in the given figure. By neglecting the internal resistance of the ammeters, the reading in t04 Aug, 2021 (M)Units
  31. 31A message signal of frequency f m is used to modulate a carrier of frequency f c . If the side bands are f 1 and f 2 then the ratio f c f m 04 Aug, 2021 (M)Dimensions
  32. 32The dimension of in mass , length and time is ( electric field, permeability of free space)14 Sep, 2020 (M)Dimensions
  33. 33The surface tension of 70 dynes is equal to14 Sep, 2020 (M)Units
  34. 34What is the dimension of ? magnetic permeability and permittivity of free space)11 Sep, 2020 (M)Dimensions
  35. 35The dimension of angular momentum in mass , length and time is11 Sep, 2020 (E)Dimensions
  36. 36The nuclear forces are10 Sep, 2020 (M)Units
  37. 37Due to an explosion underneath water, a bubble started oscillating. If this oscillation has time period , which is proportional to , where i10 Sep, 2020 (M)Dimensions
  38. 38A carrier signal of frequency v 1 and peak voltage of V 1 is modulated by a message signal of frequency v 2 and peak voltage of V 2 . Let m 09 Sep, 2020 (M)Dimensions
  39. 39Consider a spongy block of mass floating on a flowing river. The maximum mass of the block is related to the speed of the river flow , accel06 May, 2019 (M)Dimensions
  40. 40Which of the following represents fundamental forces of nature?03 May, 2019 (E)Units
  41. 41Which of the following does not follow first law of thermodynamics? ( w = work ; q = heat ; U = change in internal energy )03 May, 2019 (E)Dimensions
  42. 42Dimensions of the quantity , where is the pressure, is electric permittivity of free space and is permeability of free space, will be07 May, 2018 (M)Dimensions
  43. 43If is the volume of a standard unit cell of germanium crystal containing atoms, then the expression for the mass of a volume in terms of and05 May, 2018 (M)Units
  44. 44A gas satisfies the relation P V 5 / 3 = K where P is pressure, V is volume and K is constant. The dimensions of constant K are04 May, 2018 (M)Dimensions
  45. 45An energy of is equal to04 May, 2018 (E)Units
  46. 46Force is given by the expression, , where is displacement and is time. The dimension of is same as that of2016Dimensions
  47. 47Force is given by the equation . Then dimensions of are2015Dimensions
  48. 48If the velocity of light, Planck's constant and gravitational constant are taken as fundamental quantities, then the dimensional formula of 2014Dimensions
  49. 49If and respectively denote energy, mass, angular momentum and universal gravitational constant, the quantity, which has the same dimensions 2013Dimensions
  50. 50The dimensional formula of ( permeability of free space and magnetic field intensity) is2011Dimensions

Frequently Asked Questions

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

This chapter includes 59 questions compiled from TS EAMCET papers spanning 2001 to 2025.

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

These are TS EAMCET questions specifically for the Units and Dimensions chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

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

Units and Dimensions has appeared in 21 of the 25 years of TS EAMCET papers covered here, with 59 questions across 48 papers - about one per paper it appears in.

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

Of the 59 questions analysed for this chapter, 78% are easy, 17% moderate and 5% tough. 2023 had the most, with 8 questions.

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

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

  • Dimensions - 35 questions (59%)
  • Units - 21 questions (36%)
  • Errors of Measurement - 3 questions (5%)
  • Dimensions has produced the most tough questions (3).
6.Is Units and Dimensions's weightage in TS EAMCET going up or down?

Across all 48 papers analysed, Units and Dimensions has averaged about 1.2 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.1 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.