Waves is a Class 11 Physics chapter that carries about 2.1% of the Physics questions in NEET. Practise it with 39 questions covering 2 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Waves had 17 questions, about 1.3 a year. The most in one paper was 3, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 1 |
| NEET 2024 | 0 |
| NEET 2023 | 1 |
| NEET 2022 | 1 |
| NEET 2021 | 0 |
| NEET 2020 | 1 |
| NEET 2019 | 0 |
| NEET 2018 | 2 |
| NEET 2017 | 2 |
| NEET 2016 | 3 |
| Re-AIPMT 2015 | 2 |
| AIPMT 2014 | 3 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
When a source of sound moves towards a stationary observer, the frequency the observer hears:
Answer: B. increases
Why: By the Doppler effect, when a sound source approaches an observer, successive wave crests are compressed, raising the observed frequency.
The speed of a transverse wave on a stretched string depends on the:
Answer: A. tension in the string and its mass per unit length
Why: The speed of a wave on a string is v = √(T/μ), depending on the tension T and the linear mass density (mass per unit length) μ — not on amplitude.
The frequency of a vibrating wire (sonometer) is inversely proportional to its:
Answer: C. length
Why: f = (1/2L)√(T/μ).
If the amplitude of a wave is doubled, with its frequency unchanged, the intensity becomes:
Answer: C. four times
Why: I ∝ A²f².
The first overtone of a closed organ pipe is the:
Answer: A. third harmonic
Why: A closed pipe has only odd harmonics: f, 3f, 5f.
Waves on a string and light waves are respectively:
Answer: C. transverse and transverse
Why: Sound in a gas is longitudinal.
A source emitting 100 Hz moves towards a stationary observer at 34 m/s. Taking the speed of sound as 340 m/s, the observer hears approximately:
Answer: D. 111 Hz
Why: f' = f × v/(v − vₛ) = 100 × 340/306 ≈ 111 Hz.
An echo is heard 2 s after a shout. If the speed of sound is 340 m/s, the distance of the reflecting wall is:
Answer: D. 340 m
Why: The sound travels to the wall and back in 2 s, covering 680 m, so the wall is at 340 m.
Waves carries about 2.1% of the Physics questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 17 times, about 1.3 questions a year.
Waves is a Class 11 Physics chapter in the NCERT syllabus.
NeetVictory has 39 practice questions on Waves, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory