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Physics - Waves and Sound

Practise 95 TS EAMCET previous year questions on Waves and Sound, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty TS EAMCET tests.

Waves and Sound has been asked in 23 of the 24 years of TS EAMCET papers analysed (2001–2024), with 95 questions in all. 41% of them were easy, 43% moderate and 16% tough. Most of its questions came from 2024, with 10 questions that year. In the last three years (2022–2024) it had 27 questions across 17 papers, about 1.6 per paper.

The chapter's 10 topics are not weighted equally: Vibration of String (20 questions, 21%), Doppler’s Effect (19 questions, 20%), and Beats (12 questions, 13%) have been asked the most. Vibration of String has also led over the last five years, with 8 questions. Doppler’s Effect has produced the most tough questions (3).

  1. 1An air column in a tube of length 50 cm, closed at one end is vibrating in its fifth harmonic. The phase difference between a particle at th04 May, 2025 (M)Stationary waves
  2. 2A metal rod of length 125 cm is clamped at its midpoint. If the speed of the sound in the metal is , then the fundamental frequency of the l04 May, 2025 (M)Vibration of String
  3. 3The air columns in two tubes closed at one end vibrating in their fundamental modes produce 2 beats per second. The number of beats produced04 May, 2025 (E)Organ Pipe (Vibration of Air Column)
  4. 4A car moving towards a cliff emits sound of frequency ' '. If the difference in frequencies of the horn and its echo heard by the driver of 04 May, 2025 (E)Doppler’s Effect
  5. 5A sound wave of frequency 210 Hz travels with a speed of along the positive x-axis. Each particle of the wave moves a distance of 10 cm betw03 May, 2025 (M)Travelling Waves
  6. 6A string vibrates in its fundamental mode when a tension is applied to it. If the length of the string is decreased by and the tension appli03 May, 2025 (M)Vibration of String
  7. 7Two tuning forks of frequencies 320 Hz and 323 Hz are vibrated together. The time interval between a maximum sound and its adjacent minimum 03 May, 2025 (E)Beats
  8. 8The frequency of sound heard by an observer moving towards a stationary source with certain speed is and if the observer moves away from the03 May, 2025 (E)Doppler’s Effect
  9. 9The fundamental frequency of transverse wave of a stretched string subjected to a tension is 300 Hz. If the length of the string is doubled 02 May, 2025 (M)Vibration of String
  10. 10Two sound waves each of intensity I are superimposed. If the phase difference between the waves is , then the intensity of the resultant wav02 May, 2025 (M)Interference and Superposition of Waves
  11. 11If the lengths of the open and closed pipes are in the ratio of , then the ratio of the frequencies of the third harmonic of the open pipe a02 May, 2025 (E)Organ Pipe (Vibration of Air Column)
  12. 12The equation of a transverse wave propagating on a stretched string is given by , where and are in metre and the time ' t ' is in second. If02 May, 2025 (E)Basics of Mechanical Waves
  13. 13The difference between the fundamental frequencies of an open pipe and a closed pipe of same length is 100 Hz . The difference between the f11 May, 2024 (M)Organ Pipe (Vibration of Air Column)
  14. 14The displacement equations of sound waves produced by two sources are given by and , where ' ' is time in seconds. If the waves are produced11 May, 2024 (M)Beats
  15. 15The difference between the fundamental frequencies of an open pipe and a closed pipe of same length is 100 Hz . The difference between the f10 May, 2024 (M)Organ Pipe (Vibration of Air Column)
  16. 16The displacement equations of sound waves produced by two sources are given by and , where ' ' is time in seconds. If the waves are produced10 May, 2024 (M)Beats
  17. 17The path difference between two particles of a sound wave is 50 cm and the phase difference between them is . If the speed of sound in air i10 May, 2024 (E)Travelling Waves
  18. 18A source at rest emits sound waves of frequency 102 Hz . Two observers are moving away from the source of sound in opposite directions each 10 May, 2024 (E)Doppler’s Effect
  19. 19A car travelling at a speed of 54 kmph towards a wall sounds horn of frequency 400 Hz . The difference in the frequencies of two sounds, one09 May, 2024 (M)Doppler’s Effect
  20. 20The speed of a transverse wave in a stretched string ' ' is ' '. Another string ' ' of same length and same radius is subjected to same tens09 May, 2024 (M)Basics of Mechanical Waves
  21. 21A boy standing on a platform observes the frequency of a train horn as it passes by. The change in the frequency noticed as the train approa09 May, 2024 (E)Doppler’s Effect
  22. 22If three sources of sound of frequencies and are vibrated together, the number of beats produced and heard per second respectively are09 May, 2024 (E)Beats
  23. 23Among the following statements, the correct statement for a wave is14 May, 2023 (M)Basics of Mechanical Waves
  24. 24A source and an observer move away from each other with same velocity of with respect to ground. If the observer finds the frequency of soun14 May, 2023 (M)Doppler’s Effect
  25. 25A source emitting sound is tied to one end of a string of length and is rotated with an angular speed of 40 in the horizontal, plane. The ra14 May, 2023 (E)Vibration of String
  26. 26One end of a string is tied to the ceiling of a lift and a load is attached ai the bottom end of the string. When the lift is moving upwards14 May, 2023 (E)Vibration of String
  27. 27If the seventh harmonic of a closed organ pipe is in unison with fourth harmonic of an open organ pipe, then the ratio of length of closed p13 May, 2023 (M)Organ Pipe (Vibration of Air Column)
  28. 28An observer moves towards a stationary source of sound, with a speed of one-fifth of the speed of sound. The apparent increase in the freque13 May, 2023 (M)Doppler’s Effect
  29. 29A wave is given by . Then its wavelength and time period are respectively ( and are in metres and is in seconds)13 May, 2023 (E)Travelling Waves
  30. 30A tuning fork 'A' of frequency and another tuning fork ' ' of frequency ' ' produced 5 beats per second when vibrated together. If the fork 13 May, 2023 (E)Beats
  31. 31A wave is given by the equation then the velocity of the wave is ( and are in metre and is in second)12 May, 2023 (M)Travelling Waves
  32. 32An observer moves towards a stationary source of sound with a speed that of sound. The frequency of the sound emitted by the source is . The12 May, 2023 (E)Doppler’s Effect
  33. 33Which of the following wave has the largest wave speed?20 Jul, 2022 (M)Travelling Waves
  34. 34A cylindrical tube open at both ends has a fundamental frequency 'f' in air. The tube is dipped vertically in water so that half of it is in20 Jul, 2022 (E)Properties of Sound Waves
  35. 35If a Young's double slit experiment, if the distance between two slits is reduced by a factor of 2 and the wavelength of light is increased 20 Jul, 2022 (E)Travelling Waves
  36. 36Two strings and produce beat of frequency . The tension in string is slightly increased and the beat frequency is found to be . If the origi19 Jul, 2022 (M)Beats
  37. 37A wire of length stretched at both ends vibrates 250 times per second. If the length of the wire is increased by and the stretching force is19 Jul, 2022 (E)Vibration of String
  38. 38Two waves of amplitudes A 1 and A 2 respectively are superimposed. The ratio between the maximum and minimum intensities of the resultant wa18 Jul, 2022 (M)Interference and Superposition of Waves
  39. 39The distance between two successive minima of a transverse wave is 2 . 7 m . Five crests of the wave pass a given point along the direction 18 Jul, 2022 (E)Basics of Mechanical Waves
  40. 40A wire vibrates at a fundamental frequency of . A second identical wire produces 5 beats per second with it when the tension in the first wi06 Aug, 2021 (M)Vibration of String
  41. 41Two identical wires have a fundamental frequency when kept under the same tension . If the tension of one wire is increased by , then the be06 Aug, 2021 (E)Beats
  42. 42Consider an ideal gas in a closed container at 300 K . The container is then heated so that the average velocity of particles of the gas inc05 Aug, 2021 (M)Basics of Mechanical Waves
  43. 43Two non-reactive monoatomic ideal gases have their atomic masses in the ratio 3 : 4 . The ratio of their partial pressures when enclosed in 05 Aug, 2021 (E)Basics of Mechanical Waves
  44. 44A diatomic gas of volume 2 m 3 at pressure 2 10 5 N m - 2 is compressed adiabatically to a volume 0 . 5 m 3 . The work done in this process 04 Aug, 2021 (M)Basics of Mechanical Waves
  45. 45Two vibrating strings A and B produce beats of frequency 8 Hz . The beat frequency is found to reduce to 4 Hz if the tension in the string '04 Aug, 2021 (E)Vibration of String
  46. 46An organ pipe with both ends open has a length . An extra hole is created at position . The lowest frequency of sound produced is (assume, s11 Sep, 2020 (M)Organ Pipe (Vibration of Air Column)
  47. 47Two trucks heading in opposite directions each with speed , approach each other. The speed of the sound is . The driver of first truck sound11 Sep, 2020 (E)Doppler’s Effect
  48. 48A bus moving with an uniform speed of towards a building blows a horn of frequency . If speed of sound in air is , what will be the frequenc10 Sep, 2020 (M)Doppler’s Effect
  49. 49The transverse displacement of a wave on a string is given by . This represents a10 Sep, 2020 (E)Stationary waves
  50. 50The position of the final image formed by the given lens combination from the third lens will be at a distance of f 1 = + 10 cm , f 2 = - 1009 Sep, 2020 (M)Interference and Superposition of Waves

Frequently Asked Questions

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

This chapter includes 95 questions compiled from TS EAMCET papers spanning 2001 to 2025.

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

These are TS EAMCET questions specifically for the Waves and Sound chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

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

Waves and Sound has appeared in 24 of the 25 years of TS EAMCET papers covered here, with 95 questions across 61 papers - about 2 per paper it appears in.

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

Of the 95 questions analysed for this chapter, 41% are easy, 43% moderate and 16% tough. 2024 had the most, with 10 questions.

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

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

  • Vibration of String - 20 questions (21%)
  • Doppler’s Effect - 19 questions (20%)
  • Beats - 12 questions (13%)
  • Doppler’s Effect has produced the most tough questions (3).
6.Is Waves and Sound's weightage in TS EAMCET going up or down?

Across all 61 papers analysed, Waves and Sound has averaged about 1.6 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.6 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.