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JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 27 July 2022, Shift 2, Physics Q57

Question 57 of 90 in this shift, Physics question 27 of 30, Section B.

A wire of length 30 cm, stretched between rigid supports, has it's n

^{th}

and

(n+1)^{th}

harmonics at 400 Hz and 450 Hz, respectively. If tension in the string is 2700 N, it's linear mass density is ___________ kg/m.

Official answer

3

NTA final key.

Chapter: Waves
Topic: Waves on Strings
Idea tested: Harmonics and Overtones

Same idea in other shifts

Asked 2× in all

31 Aug 2021, Shift 1 · Q26A wire having a linear mass density $9.0\times10^{-4}$ kg/m is stretched between two rigid supports with a tension of 900 N. The wire…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.