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Saturday, 31 October

JEE Main · Physics · Waves

Wave Speed on String

JEE Main asked Wave Speed on String 9 times in 9 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023 and 2025. It belongs to Waves on Strings, in Waves (Physics). The longest wait between two years asking it was 2 years. In 2021, 2022 and 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
9
in 9 shifts
Years
5 of 8
First asked
2020
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.150.30’170.08’200.07’210.07’220.21’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 2 in 24 shifts · 2023: 3 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20251 of 8
  • 20240 of 18
  • 20233 of 12
  • 20222 of 24
  • 20212 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Wave speed from wave equation
  • Wave speed ratio for strings of different radius

Difficulty

Easy 6Medium 3Hard 0

6 of the 9 questions had a numerical answer.

Every question

All 9 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 8 Apr 2025, Shift 2 · Q34Two strings with circular cross section and made of same material, are stretched to have same amount of tension. A transverse wave is then…EasySingle correct
  2. 15 Apr 2023, Shift 1 · Q51The fundamental frequency of vibration of a string stretched between two rigid support is 50 Hz. The mass of the string is 18 g and its…EasyNumerical value
  3. 11 Apr 2023, Shift 2 · Q51A wire of density 8×103 kg/m38\times10^{3}\ \mathrm{kg/m^3} is stretched between two clamps 0.5 m0.5\ \mathrm{m} apart. The extension developed in the…MediumNumerical value
  4. 10 Apr 2023, Shift 1 · Q52A transverse harmonic wave on a string is given by y(x,t)=5sin⁡(6t+0.003 x)y(x,t) = 5\sin(6t + 0.003\,x) where xx and yy are in cm and tt in sec. The wave…EasyNumerical value
  5. 29 Jul 2022, Shift 2 · Q56The speed of a transverse wave passing through a string of length 50 cm and mass 10 g is 60 ms−1\mathrm{ms^{-1}}. The area of cross-section…MediumNumerical value
  6. 28 Jul 2022, Shift 1 · Q39In the wave equation y=0.5sin⁡2πλ(400 t−x) my=0.5\sin\frac{2\pi}{\lambda}(400\,t-x)\ \mathrm{m} the velocity of the wave will be :EasySingle correct
  7. 26 Feb 2021, Shift 1 · Q24The mass per unit length of a uniform wire is 0.135 g/cm. A transverse wave of the form y=−0.21sin⁡(x+30t)y=-0.21\sin(x+30t) is produced in it, where xx…MediumNumerical value
  8. 25 Feb 2021, Shift 2 · Q23The percentage increase in the speed of transverse waves produced in a stretched string if the tension is increased by 4%, will be…EasyNumerical value
  9. 8 Jan 2020, Shift 2 · Q9A transverse wave travels on a taut steel wire with a velocity of vv when tension in it is 2.06×104 N2.06\times10^{4}\ \mathrm{N}. When the…EasySingle correct

Shifts: 8 Jan 2020, Shift 2, 25 Feb 2021, Shift 2, 26 Feb 2021, Shift 1, 28 Jul 2022, Shift 1, 29 Jul 2022, Shift 2, 10 Apr 2023, Shift 1, 11 Apr 2023, Shift 2, 15 Apr 2023, Shift 1, 8 Apr 2025, Shift 2.

Same topic

Other ideas in Waves on Strings

Waves on Strings has 14 ideas JEE Main has asked; 5 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas