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Physics - Units and Dimensions

Practise 110 NEET NTA questions on Units and Dimensions. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Units and Dimensions has been asked in 0 of the 38 years of NEET NTA papers analysed (1988–2025), with 110 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2025, with 0 questions that year. In the last three years (2023–2025) it had 0 questions across 6 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1Which of the following pairs does not have similar dimensions?
  2. 2Number of particles, given by n = - D n 2 - n 1 x 2 - x 1 , is crossing a unit area perpendicular to x -axis in unit time, where n 1 and n 2
  3. 3The dimensional formula for the magnetic field is
  4. 4In a new system of units, the unit of force is 100 N , unit of length is 10 m and unit of time is 100 s . Unit of mass in this system can be
  5. 5The resistance R = V I , where V = ( 100 ± 5 ) V and I = 10 ± 0.2 A . The maximum percentage error in R is
  6. 6The square root of the product of inductance and capacitance has the dimension of
  7. 7The dimensional formula for entropy is
  8. 8A person observes that the full length of a train subtends an angle of 15 ° . If the distance between the train and the person is 3 km , the
  9. 9A person observes that the full length of a train subtends an angle of 15 ° . If the distance between the train and the person is 3 km , the
  10. 10The density of a material, in the shape of a cube, is determined by measuring three sides of the cube and its mass. If the relative errors i
  11. 11In the density measurement of a cube, the mass and edge length are measured as 10.00 ± 0.10 k g and 0.10 ± 0.01 m , respectively. The error
  12. 12Unit of magnetic moment is
  13. 13If the error in measuring the radius of the sphere is 2 % and that in measuring its mass is 3 % , then the error in measuring the density of
  14. 14The dimensional formula of 1 μ 0 ∈ 0 is .............
  15. 15Let x = a 2 b 2 c be the physical quantity. If the percentage error in the measurement of physical quantities a , b and c is 2 , 3 and 4 per
  16. 16The pressure on a circular plate is measured by measuring the force on the plate and the radius of the plate. If the errors in measurement o
  17. 17Select the dimensional formula of B 2 2 μ 0 .
  18. 18If C be the capacitance and V be the electric potential, then the dimensional formula of C V 2 is
  19. 19The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum erro
  20. 20Among the following quantities, the quantity whose dimension is independent of mass and length is
  21. 21Each minute earth receives about 2 cal of heat energy per square centimetre from the sun. This is called the solar constant S . The value of
  22. 22What is the dimension of the coefficient of viscosity η ?
  23. 23The unit of energy if fundamental units are taken as force F , acceleration A and time T is
  24. 24Out of the following four dimensional quantities, which one qualifies to be called a universal constant?
  25. 25The number of significant figures in 45056 is
  26. 26A particle starts from rest at t = 0 and moves in a straight line with acceleration as shown in figure. The velocity of the particle at t =
  27. 27The speed of light c , gravitational constant G and Planck’s constant h are taken as fundamental units in a system. The dimensions of time i
  28. 28The dimensional formula of magnetic induction B is
  29. 29If the velocity of light ( c ) , gravitational constant ( G ) and Planck's constant ( h ) are chosen as fundamental units, then the dimensio
  30. 30The percentage errors in quantities P , Q , R and S are 0 . 5 % , 1 % , 3 % and 1 . 5 % respectively in the measurement of a physical quanti
  31. 31Which of the two have the same dimensions?
  32. 32Dimensional formula of the physical quantity, resistance is
  33. 33Electric displacement is given by D = ε E , here, ε = electric permittivity, E = electric field strength The dimensions of electric displace
  34. 34If the length of rod A is 3.25 ± 0.01 c m and that of B is 4.19 ± 0.01 c m , then the rod B is longer than rod A by
  35. 35Energy E , angular momentum L and universal gravitational constant G are chosen as fundamental quantities. The dimensions of universal gravi
  36. 36The dimensions of e ⁡ 2 / 4 π ε 0 hc ⁡ , where e, ⁡ ε 0 ,h ⁡ and c ⁡ are electronic charge, electric permittivity, Planck's constant and vel
  37. 37When the voltage and current in a conductor are measured as 100 ± 4 V and 5 ± 0.2 A , then the percentage of error in the calculation of res
  38. 38Which of the following physical quantities has neither dimensions nor unit?
  39. 39In the equation p + α V 2 V - b = constant , the unit of α is
  40. 40The internal and external diameters of a hollow cylinder are measured with the help of vernier callipers. Their values are 4.23 ± 0.01 cm an
  41. 41The dimensional formula for permittivity of free space ε 0 in the equation F = 1 4 π ε 0 q 1 q 2 r 2 , where symbols have their usual meanin
  42. 42Which of the following physical quantities has neither dimensions nor unit?
  43. 43Which of the following pair have same dimensional formula?
  44. 44The least count of a stopwatch is 0.2 s . The time of 20 oscillations of a pendulum is measured to be 25 s . The percentage error in the mea
  45. 45The unit of Stefan's constant σ is
  46. 46If pressure P , velocity V and time T are taken as fundamental physical quantities, the dimensional formula of force is
  47. 47A resistor of 10 kΩ having tolerance 10 % is connected in series with another resistor of 20 kΩ having tolerance 20 % . The tolerance of the
  48. 48The set of physical quantities among the following which is dimensionally different is
  49. 49A string of mass per unit length 0.2 kg m - 1 and length 0.6 m is fixed at both ends such that it has a tension of 80 N . If the string is v
  50. 50A spherical liquid drop is placed on a horizontal plane. A small disturbance causes the volume of the drop to oscillate. The time period of

Frequently Asked Questions

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

This chapter includes 110 NEET NTA questions.

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

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

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

Of the 110 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2025 had the most, with 0 questions.

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

All of this chapter's questions come from a single topic: Uncategorized.