Learn

Saturday, 31 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 31 August 2021, Shift 1, Physics Q26

Question 26 of 90 in this shift, Physics question 26 of 30, Section B.

A wire having a linear mass density 9.0×10−49.0\times10^{-4} kg/m is stretched between two rigid supports with a tension of 900 N. The wire resonates at a frequency of 500 Hz. The next higher frequency at which the same wire resonates is 550 Hz. The length of the wire is __________ m.

Official answer

10

NTA final key.

Chapter
Waves
Topic
Waves on Strings
Idea tested
Harmonics and Overtones

Same idea in other shifts

Asked 2× in all
  1. 27 Jul 2022, Shift 2 · Q57A wire of length 30 cm, stretched between rigid supports, has it's nth^{th} and (n+1)th(n+1)^{th} harmonics at 400 Hz and 450 Hz, respectively.…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.