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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 29 June 2022, Shift 2, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

In an experiment to determine the velocity of sound in air at room temperature using a resonance tube, the first resonance is observed when the air column has a length of 20.0 cm for a tuning fork of frequency 400 Hz is used. The velocity of the sound at room temperature is 336 ms−1\mathrm{ms^{-1}}. The third resonance is observed when the air column has a length of ________ cm

Official answer

104

NTA final key.

Chapter
Waves
Topic
Resonance in Air Columns
Idea tested
End Correction Calculation from Resonant Lengths

Same topic in other shifts

All Resonance in Air Columns questions
  1. 3 Apr 2025, Shift 2 · Q35In the resonance experiment, two air columns (closed at one end) of 100 cm and 120 cm long, give 15 beats per second when each one is…MediumSingle correct
  2. 6 Apr 2024, Shift 2 · Q51Two open organ pipes of lengths 60 cm and 90 cm resonate at 6th6^{\text{th}} and 5th5^{\text{th}} harmonics respectively. The difference of…EasyNumerical value
  3. 8 Apr 2024, Shift 1 · Q54A closed and an open organ pipe have same lengths. If the ratio of frequencies of their seventh overtones is (a−1a)\left(\frac{a-1}{a}\right)…MediumNumerical value
  4. 30 Jan 2024, Shift 1 · Q54In a closed organ pipe, the frequency of fundamental note is 30 Hz. A certain amount of water is now poured in the organ pipe so that the…HardNumerical value
  5. 31 Jan 2024, Shift 1 · Q49The fundamental frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. If length of the open…EasySingle correct
  6. 8 Apr 2023, Shift 1 · Q51An organ pipe 40 cm40\ \mathrm{cm} long is open at both ends. The speed of sound in air is 360 ms−1360\ \mathrm{ms^{-1}}. The frequency of the…EasyNumerical 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.