JEE Main · Physics · Mechanical Properties of Solids
Finding Natural Length from Two Tensions
JEE Main asked Finding Natural Length from Two Tensions 3 times in 3 of the 108 shifts Lumi analysed, in 2021, 2022 and 2025. It belongs to Elasticity, in Mechanical Properties of Solids (Physics). The longest wait between two years asking it was 3 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2021
- last in 2025
- Pattern
- Comes in cycles
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2021, 2022 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 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.
How JEE Main framed it
Single correct is the usual form. Skill tested: calculation.
- Original length from two tensions
- Natural length of wire from two loads
Difficulty
1 of the 3 questions had a numerical answer.
Every question
All 3 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 2 Apr 2025, Shift 2 · Q48The length of a light string is 1.4 m when the tension on it is 5 N. If the tension increases to 7 N, the length of the string is 1.56 m.…EasyNumerical value
- 29 Jun 2022, Shift 1 · Q36A wire of length L is hanging from a fixed support. The length changes to and when masses 1 kg and 2 kg are suspended…MediumSingle correct
- 26 Feb 2021, Shift 2 · Q15The length of metallic wire is when tension in it is . It is when the tension is . The original length of the wire…EasySingle correct
Shifts: 26 Feb 2021, Shift 2, 29 Jun 2022, Shift 1, 2 Apr 2025, Shift 2.
Same topic
Other ideas in Elasticity
Elasticity has 19 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.
- Elastic Moduli18× · 2026
- Stress and Strain Types8× · 2024
- Breaking Stress and Breaking Force7× · 2026
- Series and Parallel Composite Wires7× · 2026
- Hooke's Law5× · 2024
- Elastic Potential Energy4× · 2026
- Elongation Due to Self-Weight4× · 2026
- Error Analysis in Searle's Experiment4× · 2026
- Elastic Energy Density4× · 2025
- Searle's Experiment for Young's Modulus2× · 2025
- Compression at Liquid Depth2× · 2024
- Compressibility and Density Changes2× · 2021