JEE Physics

Significant Figures & Error Analysis: JEE Questions & Solutions

24 previous-year JEE Physics questions on Significant Figures & Error Analysis, each with a worked step-by-step solution.

Intermediate

Previous-year questions

  1. 01In an experiment the values of two spring constants were measured as k₁ = (10 ± 0.2) N/m and k₂ = (20 ± 0.3) N/m. If these springs are…MCQEasyJEE 2026
  2. 02Keeping the significant figures in view, the sum of the physical quantities 52.01 m, 153.2 m and 0.123 m is:MCQEasyJEE 2026
  3. 03A spherical body of radius r and density σ falls freely through a viscous liquid having density ρ and viscosity η and attains a terminal…MCQEasyJEE 2026
  4. 04Four persons measure the length of a rod as 20.00 cm, 19.75 cm, 17.01 cm and 18.25 cm. The relative error in the measurement of average…MCQEasyJEE 2026
  5. 05The time period of a simple harmonic oscillator is T=2π√(m/k). Measured value of mass m of the object is 10 g with an accuracy of 10 mg and…MCQMediumJEE 2026
  6. 06In an experiment, a set of readings are obtained as follows: 1.24~mm, 1.25~mm, 1.23~mm, 1.21~mm. The expected least count of the instrument…MCQEasyJEE 2026
  7. 07The maximum percentage error in the measurement of the density of a wire is: Given, mass of wire = (0.60 ± 0.003) g, radius of wire = (0.50…MCQEasyJEE 2025
  8. 08The energy of a system is given as E(t) = α³ e^(-β t), where t is the time and β = 0.3 s⁻¹. The errors in the measurement of α and t are…MCQMediumJEE 2025
  9. 09For an experimental expression y = (32.3 × 1125)/27.4, where all the digits are significant. Then to report the value of y, we should write:MCQEasyJEE 2025
  10. 10A tiny metallic rectangular sheet has length and breadth of 5 mm and 2.5 mm, respectively. Using a specially designed screw gauge which has…NVAEasyJEE 2025
  11. 11A bar magnet has total length 2l = 20 units and the field point P is at a distance d = 10 units from the centre of the magnet. If the…MCQMediumJEE 2025
  12. 12A physical quantity Q is related to four observables a, b, c, and d as follows: Q = ab⁴/cd where a = (60 ± 3) Pa; b = (20 ± 0.1) m; c = (40…NVAEasyJEE 2025
  13. 13A person measures mass of 3 different particles as 435.42 g, 226.3 g and 0.125 g. According to the rules for arithmetic operations with…MCQEasyJEE 2025
  14. 14A physical quantity C is related to four other quantities p, q, r and s as follows C = pq²/(r³ √s) The percentage errors in the measurement…NVAEasyJEE 2025
  15. 15A quantity Q is formulated as Q = X⁻² Y^(3/2) Z^(-2/5). X, Y, and Z are independent parameters which have fractional errors of 0.1, 0.2,…MCQEasyJEE 2025
  16. 16The resistance R = V/I where V = (200± 5) V and I = (20± 0.2) A. The percentage error in the measurement of R is:MCQEasyJEE 2024
  17. 17A physical quantity Q is found to depend on quantities a, b, c by the relation Q = a⁴b³/c². The percentage error in a, b, c are 3%, 4%, and…MCQEasyJEE 2024
  18. 18If the percentage errors in measuring the length and the diameter of a wire are 0.1% each, the percentage error in measuring its resistance…MCQEasyJEE 2024
  19. 19In an experiment measuring the refractive index of a glass slab using a travelling microscope, a student measures the real thickness of the…NVAMediumJEE 2023
  20. 20Two resistances are given as R₁ = (10 ± 0.5)Ω and R₂ = (15 ± 0.5)Ω. The percentage error in the measurement of equivalent resistance when…MCQMediumJEE 2023
  21. 21A 2 meter long scale with least count of 0.2 cm is used to measure the locations of objects on an optical bench. While measuring the focal…MCQMediumJEE 2023
  22. 22A cylindrical wire of mass (0.4 ± 0.01) g has length (8 ± 0.04) cm and radius (6 ± 0.03) mm. The maximum error in its density will be:MCQEasyJEE 2023
  23. 23A physical quantity P is given as P = a²b³/c√d. The percentage error in the measurement of a, b, c, and d are 1%, 2%, 3%, and 4%…MCQEasyJEE 2023
  24. 24Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A spherical body of…MCQEasyJEE 2023

Frequently asked questions

Our bank has 24 previous-year JEE Physics questions tagged to Significant Figures & Error Analysis, drawn from JEE papers between 2023 and 2026, including 6 from 2026 alone. Each comes with a full step-by-step solution.

Significant Figures & Error Analysis is rated Intermediate overall for JEE Physics. The PYQs on this page break down as 18 easy, 6 medium.

Of the 24 previous-year questions on Significant Figures & Error Analysis, 20 are multiple-choice (MCQ) and 4 are numerical-value (NVA) questions.

Based on recent paper analysis, Significant Figures & Error Analysis is worth about 2 marks in JEE Main. It sits in Units & Measurements, a Class 11 Physics chapter.

More Units & Measurements topics

Dimensions & Dimensional Analysis44SI System & Derived Units4Physical Quantities & Units1

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