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Friday, 9 October

NEET UG 2021 · Chemistry · Question 57

NEET 2021 Chemistry, question 57

Question 57 of the NEET 2021 paper (code O1) is a Chemistry question from Structure of Atom. Its idea, Wave Nature of Electromagnetic Radiation, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q57 · Chemistry

A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, c=3.0×108c = 3.0\times10^{8} ms−1\mathrm{ms^{-1}}]

  1. 12192 m
  2. 221.92 cm
  3. 3219.3 mOfficial answer
  4. 4219.2 m

Official answer: option 3 · NTA final answer key

Same idea

The only question on Wave Nature of Electromagnetic Radiation

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

Wave Nature of Electromagnetic Radiation: every question and how it was framed

The chapter

Structure of Atom in ten years of NEET

16 questions from 2017–2026, asked in 10 of 10 papers, about 1.5 a paper. Quantum Numbers alone had 16.

Structure of Atom: questions per paper

0241’171’182’191’202’212’222’232’242’251’26