Waves — JEE Main Previous Year Questions

How many JEE Main questions come from Waves?

Waves has contributed 100 questions to Joint Entrance Examination (Main) papers between 2016 and 2026 — an average of about 9 questions a year. That count is measured from EByAi’s bank of 55,289 JEE Main questions, not estimated from a syllabus. Every one of the 100 questions carries a written, step-by-step solution, and each is tagged to Waves within Physics, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Waves questions from real JEE Main papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 100 Waves questions (with full written solutions) are available in practice.

1. Question 1 · JEE Main 2026

   A point source is kept at the center of a spherically enclosed detector. If the volume of the detector increased by 8 times, the intensity will
   1. (A)increase by 64 times
   2. (B)decrease by 4 times
   3. (C)decrease by 8 times
   4. (D)increase by 8 times
   Show answerAnswer

   Answer: (B) decrease by 4 times

2. Question 2 · JEE Main 2025

   The equation of a wave traveling on a string is y = sin[20πx + 10πt], where x and t are distance and time in SI units. The minimum distance between two points having the same oscillating speed is:
   1. (A)10 cm
   2. (B)2.5 cm
   3. (C)20 cm
   4. (D)5.0 cm
   Show answerAnswer

   Answer: (D) 5.0 cm

3. Question 3 · JEE Main 2025

   In 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 sounding in the respective fundamental modes. The velocity of sound in the air column is:
   1. (A)$370\mathrm{m}/\mathrm{s}$
   2. (B)$340\mathrm{m}/\mathrm{s}$
   3. (C)$335\mathrm{m}/\mathrm{s}$
   4. (D)$360\mathrm{m}/\mathrm{s}$
   Show answerAnswer

   Answer: (D) $360\mathrm{m}/\mathrm{s}$

4. Question 4 · JEE Main 2022

   If a wave gets refracted into a denser medium, then which of the following is true?
   1. (A)Wavelength, speed and frequency decrease.
   2. (B)Wavelength increases, speed decreases and frequency remains constant.
   3. (C)Wavelength and speed decrease but frequency remains constant.
   4. (D)Wavelength, speed and frequency increase.
   Show answerAnswer

   Answer: (C) Wavelength and speed decrease but frequency remains constant.

5. Question 5 · JEE Main 2022

   The velocity of sound in a gas, in which two wavelengths 4.08 m and 4.16 m produce 40 beats in 12s, will be :
   1. (A)282.8 ms ${}^{-1}$
   2. (B)175.5 ms ${}^{-1}$
   3. (C)353.6 ms ${}^{-1}$
   4. (D)707.2 ms ${}^{-1}$
   Show answerAnswer

   Answer: (D) 707.2 ms ${}^{-1}$

Waves questions by year

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