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Physics - Waves and Sound

Practise 62 NEET previous year questions on Waves and Sound, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Waves and Sound has been asked in 23 of the 39 years of NEET papers analysed (1988–2026), with 62 questions in all. 31% of them were easy, 52% moderate and 18% tough. Most of its questions came from 2009, with 6 questions that year. In the last three years (2024–2026) it had 4 questions across 13 papers, about 0.3 per paper.

The chapter's 9 topics are not weighted equally: Organ Pipe (Vibration of Air Column) (14 questions, 23%), Beats (12 questions, 19%), and Doppler's Effect (10 questions, 16%) have been asked the most. Organ Pipe (Vibration of Air Column) has also led over the last five years, with 5 questions. Vibration of String has produced the most tough questions (3).

  1. 1For a travelling harmonic wave , where and are in cm and in s. The phase difference between oscillatory motion of two points separated by a 2026 (Cancelled)Travelling Waves
  2. 2For sound waves, if the number of nodes for the harmonic of an open-ended pipe is and that for the harmonic of the same pipe with one of its2026 (Re-NEET)Organ Pipe (Vibration of Air Column)
  3. 3A pipe open at both ends has a fundamental frequency in air. The pipe is now dipped vertically in a water drum to half of its length. The fu2025Organ Pipe (Vibration of Air Column)
  4. 4The displacement of a travelling wave (at ) where is time, is distance and is the wavelength, all in S.I. units. Then the frequency of the w2024 (Re-NEET)Travelling Waves
  5. 5The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length is:2023 (All India)Organ Pipe (Vibration of Air Column)
  6. 6The overtone of a closed organ pipe is same as that of overtone of an open pipe. The ratio of the length of the closed pipe to the length of2023 (Manipur)Organ Pipe (Vibration of Air Column)
  7. 7If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the strin2022 (Phase 1)Basics of Mechanical Waves
  8. 8An organ pipe filled with a gas at resonates at in its fundamental mode. If it is filled with the same gas at , the resonance frequency at t2022 (Phase 2)Organ Pipe (Vibration of Air Column)
  9. 9In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz . When tension in B is s2020 (Phase 1)Beats
  10. 10The length of the string of a musical instrument is 90 cm and has a fundamental frequency of 120 Hz . Where should it be pressed to produce 2020 (Phase 2)Vibration of String
  11. 11A tuning fork with frequency produces resonance in a resonance column tube with upper end open and lower end closed by water surface. Succes2019 (Odisha)Organ Pipe (Vibration of Air Column)
  12. 12The fundamental frequency in an open organ pipe is equal to the third harmonic of closed organ pipe. If the length of the closed organ pipe 2018Organ Pipe (Vibration of Air Column)
  13. 13A tuning fork is used to produce resonance in glass tube. The length of the air column in this tube can be adjusted by a variable piston. At2018Organ Pipe (Vibration of Air Column)
  14. 14Two cars moving in opposite directions approach each other with speed of 22 m s - 1 and 16.5 m s - 1 respectively. The driver of the first c2017Doppler's Effect
  15. 15The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the 2017Travelling Waves
  16. 16A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15 m s - 1 . Then, the frequency of s2016 (Phase 1)Doppler's Effect
  17. 17A uniform rope of length L and mass m 1 , hangs vertically from a rigid support. A block of mass m 2 is attached to the free end of the rope2016 (Phase 1)Vibration of String
  18. 18An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is 50 cm . The n2016 (Phase 1)Organ Pipe (Vibration of Air Column)
  19. 19The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe which is L meter long. The length of2016 (Phase 2)Organ Pipe (Vibration of Air Column)
  20. 20Three sound waves of equal amplitudes have frequencies, ( n 1 ) , n , ( n + 1 ) . They superimpose to give beats. The number of beats produc2016 (Phase 2)Beats
  21. 21The fundamental frequency of a closed organ pipe of length 20 cm is equal to the second overtone of an organ pipe open at both the ends. The2015 (Phase 1)Organ Pipe (Vibration of Air Column)
  22. 22A source of sound S emitting waves of frequency 100 Hz and an observer O are located at some distance from each other. The source is moving 2015 (Phase 2)Doppler's Effect
  23. 23A string is stretched between fixed points separated by 75.0 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz. There are2015 (Phase 2)Vibration of String
  24. 24If n 1 , n 2 and n 3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequen2014Travelling Waves
  25. 25The number of possible natural oscillations of air column in a pipe closed at one end of length 85 c m whose frequencies lies below 1250 H z2014Organ Pipe (Vibration of Air Column)
  26. 26A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 k m / h o u r . He finds that traffic has eased and a car moving 2014Doppler's Effect
  27. 27A wave travelling in the positive -direction having displacement along -direction as , wavelength and frequency of is represented by2013 (All India)Basics of Mechanical Waves
  28. 28If we study the vibration of a pipe open at both ends, then the following statements is not true2013 (All India)Organ Pipe (Vibration of Air Column)
  29. 29A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency . The second harmonic of the source of unknown f2013 (All India)Beats
  30. 30The length of the wire between two ends of sonometer is . What should be the positions of two bridges below the wire so that the three segme2013 (Karnataka)Vibration of String
  31. 31Two source and produce notes of frequency each. A listener moves from to with a speed of . If the speed of sound is , then the number of bea2013 (Karnataka)Beats
  32. 32A train moving at a speed of towards a stationary object, emits a sound of frequency . Some of the sound reaching the object gets reflected 2012 (Mains)Doppler's Effect
  33. 33When a string is divided into three segments of lengths and , the fundamental frequencies of these three segments are , and respectively. Th2012 (Screening)Vibration of String
  34. 34Two sources of sound placed close to each other, are emitting progressive waves given by An observer located near these two sources of sound2012 (Screening)Beats
  35. 35Two identical piano wires kept under the same tension have a fundamental frequency of . The fractional increase in the tension of one of the2011 (Mains)Beats
  36. 36Sound waves travel at through a warm air and at through brass. The wavelength of a acoustic wave as it enters brass from warm air2011 (Screening)Speed of Sound Waves
  37. 37A transverse wave is represented by . For what value of the wavelength is the wave velocity equal to the maximum particle velocity?2010 (Screening)Basics of Mechanical Waves
  38. 38A tuning fork of frequency makes 4 beats/seconds with the vibrating string of a piano. The beat frequency decreases to 2 beats/s when the te2010 (Screening)Beats
  39. 39The driver of a car traveling with speed 30 towards a hill sounds a horn of frequency . If the velocity of sound in air is 330 , the frequen2009 (Mains)Doppler's Effect
  40. 40A wave in a string has an amplitude of . The wave travels in the +ve direction of -axis with a speed of and it is noted that 5 complete wave2009 (Mains)Travelling Waves
  41. 41Each of the two strings of length and are tensioned separately by force. Mass per unit length of both the strings is same and equal to . Whe2009 (Mains)Beats
  42. 42A wave in a string has an amplitude of . The wave travels in the +ve direction of axis with a speed of and it is noted that 5 complete waves2009 (Screening)Travelling Waves
  43. 43The driver of a car travelling with speed towards a hill sounds a horn of frequency . If the velocity of sound in air is , the frequency of 2009 (Screening)Doppler's Effect
  44. 44Each of the two strings of length and are tensioned separately by force. Mass per unit length of both the strings is same and equal to . Whe2009 (Screening)Beats
  45. 45The wave described by , where and are in meters and in seconds, is a wave travelling along the2008 (Mains)Travelling Waves
  46. 46. Two points are located at a distance of and from the source of oscillation. The period of oscillation is and the velocity of the wave is .2008 (Mains)Basics of Mechanical Waves
  47. 47Two periodic waves of intensities and pass through a region at the same time in the same direction. The sum of the maximum and minimum inten2008 (Mains)Interference and Superposition of Waves
  48. 48Two points are located at a distance of and from the source of oscillation. The period of oscillation is and the velocity of the wave is . W2008 (Screening)Basics of Mechanical Waves
  49. 49Two periodic waves of intensities and pass through a region at the same time in the same direction. The sum of the maximum and minimum inten2008 (Screening)Interference and Superposition of Waves
  50. 50The wave described by , where and are in metre and in second, is a wave travelling along the2008 (Screening)Travelling Waves

Frequently Asked Questions

1.How many questions are available for Waves and Sound?

This chapter includes 62 questions compiled from NEET papers spanning 2002 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Waves and Sound chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Waves and Sound an important chapter for NEET Physics?

Waves and Sound has appeared in 23 of the 25 years of NEET papers covered here, with 62 questions across 34 papers - about 2 per paper it appears in.

4.What is the difficulty level of Waves and Sound questions in NEET?

Of the 62 questions analysed for this chapter, 31% are easy, 52% moderate and 18% tough. 2009 had the most, with 6 questions.

5.Which topics in Waves and Sound should I focus on?

These topics have carried the most weightage in Waves and Sound:

  • Organ Pipe (Vibration of Air Column) - 14 questions (23%)
  • Beats - 12 questions (19%)
  • Doppler's Effect - 10 questions (16%)
  • Vibration of String has produced the most tough questions (3).
6.Is Waves and Sound's weightage in NEET going up or down?

Across all 34 papers analysed, Waves and Sound has averaged about 1.8 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.