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Friday, 9 October

NEET UG 2026 · Physics · Question 4

NEET 2026 Physics, question 4

Question 4 of the NEET 2026 paper (re-exam) is a Physics question from Waves. Its idea, Nodes and Antinodes, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q4 · Physics

For sound waves, if the number of nodes for the 5th^{th} harmonic of an open-ended pipe is n and that for the 9th^{th} harmonic of the same pipe with one of its ends closed is m, the ratio nm\frac{n}{m} is :

  1. 159\frac{5}{9}
  2. 295\frac{9}{5}
  3. 31Official answer
  4. 435\frac{3}{5}

Official answer: option 3 · NTA final answer key

Same idea

The only question on Nodes and Antinodes

No other NEET paper from 2017–2026 tested this exact idea.

Nodes and Antinodes: every question and how it was framed

The chapter

Waves in ten years of NEET

9 questions from 2017–2026, asked in 7 of 10 papers, about 0.9 a paper. Standing Waves, Organ Pipes and Beats alone had 7.

Chapter analysisStudy this chapterPractise this chapter

Waves: questions per paper

0242’172’180’191’200’211’221’230’241’251’26