NEET PhysicsNCERT Class 11Oscillations and Waves
Waves: NEET questions with solutions
NEET uses this chapter for reading amplitude, wavelength, frequency and speed from a wave equation, wave speed on a string, Newton's and Laplace's formulas for sound, harmonics of strings and pipes, superposition and beats. Marks are lost by mixing k with ω, giving a closed pipe even harmonics, and treating beat frequency as a sum.
Revise first: NCERT notes for WavesQuestions
10 questions · answers after you pick
1A wave on a string is described by y(x, t) = 0.05 sin(20x − 400t), with x and y in metres and t in seconds. The speed of the wave isDisplacement relation of a progressive waveEasySingle correct2Sound travels through air only as compressions and rarefactions. Judge whether the Assertion (A) about transverse mechanical waves in gases…Transverse and longitudinal wavesEasyAssertion–Reason3Two sound sources of equal amplitude, with frequencies 340 Hz and 336 Hz, are sounded together. What are the beat frequency and the…BeatsEasySingle correct4A string of length 1.25 m and mass 5.0 g is stretched with a tension of 100 N. The speed of transverse waves on it is aboutWave speed on a stretched stringMediumSingle correct5A pipe 0.85 m long is closed at one end and open at the other. The speed of sound in air is 340 m s⁻¹. Which of the following frequencies…Harmonics of strings and pipesMediumSingle correct6A gas has density 1.25 kg m⁻³ at a pressure of 1.0 × 10⁵ Pa, and its ratio of specific heats is γ = 1.4. Using Laplace's formula, the speed…Speed of sound: Newton and LaplaceMediumSingle correct7A string 1.5 m long, fixed at both ends, vibrates in a standing-wave pattern with three loops (two nodes between the ends). The speed of…Reflection and standing wavesMediumSingle correct8For each system in List I, the length is L and the wave speed is v. Match each with its frequency in List II.Harmonics of strings and pipesMediumMatch the following9A guitar string sounded with a 300 Hz tuning fork gives 4 beats per second. When the tension in the string is slightly reduced, the beats…BeatsHardSingle correct10Two waves y₁ = a sin(kx − ωt) and y₂ = a sin(kx − ωt + 2π/3) travel along the same string. The amplitude of the resultant wave isPrinciple of superpositionHardSingle correct
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