Sound Wave Formula for NEET Exam 2025
Sound Wave Formula for NEET 2025 is a fundamental topic in the NEET 2025 syllabus develops an understanding of the concept. Sound Wave Formula help to solve the numerical problems in NEET UG exam.
Praveen Kushwah11 Mar, 2025
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Sound Wave Formula: Understanding the principles of sound waves is interesting, especially for those aiming for NEET 2025. Sound Wave Formula, a fundamental topic in the NEET 2025 syllabus develops an understanding of the concept.
Aspiring medical students preparing for NEET can benefit from a comprehensive exploration of sound wave formulas, ensuring a strong foundation for the upcoming examination.Sound Wave Formula
The Sound Wave Formula is a mathematical way of explaining how sound wave travels through air. It is represented by the equation y(x, t) = A * sin(kx - ωt + φ). In simple terms, it tells us about the up-and-down movement (amplitude) of air particles as sound moves through them. The formula includes things like the size of the "amplitude", "frequency", and (wavelength).Speed of Sound (v)
v = √(B/ρ)
where B is the bulk modulus of the medium and ρ is the density of the medium.Frequency (f), Wavelength (λ), and Speed (v) Relationship
v = fλ
This formula describes the relationship between the frequency, wavelength, and speed of a sound wave.Intensity (I) and Amplitude (A) Relationship
I = (1/2)ρvA²ω²
where ω is the angular frequency of the sound wave.Doppler Effect for Sound
The Doppler Effect for sound refers to the change in frequency or wavelength of a sound wave about an observer moving relative to the source of the sound. The Doppler Effect can be observed in various situations, such as when a vehicle with a sounding siren approaches and passes by an observerf' = (v ± vo)/(v ± vs) * f
where f' is the observed frequency, f is the source frequency, vo is the observer's velocity, and vs is the velocity of the source. Intensity Level (L) and Sound Level (β)L = 10 * log 10 (I/I0) β = L - 10 * log 10 (I 0 /I 1 )
where I 0 is the reference intensity and I1 is the actual intensity.Longitudinal Displacement of Sound Wave
y = A sin (ωt – kx)
Speed of Sound
Where P = Elastic modulus for the medium ρ = density of the medium γ = radio of specific heat
Loudness of Sound
L = 10 log 10 (I/I 0 ) dB
I 0 = the minimum intensity human ear can hear I = intensity at a distance r from the point sourceOpen Organ Pipe
The frequency of the pth overtone is (p + 1)n 1 where n 1 is the fundamental frequency The frequency of harmonics is in the radio 1:2:3….Closed Organ Pipe
The frequency of the pth overtone is (2p+ 1)n 1 where n 1 is the fundamental frequency The frequency of harmonics is in the radio 1:3:5….Beat Frequency
Beat frequency
Where f1 and f2 are the frequencies of the two waves
Doppler Effect
The Doppler Effect refers to the change in frequency or wavelength of a wave in relation to an observer moving relative to its source. It is commonly observed in sound waves but also applies to other types of waves, such as light. When a sound source or the observer is in motion, the frequency of the waves experienced by the observer differs from the frequency at which the waves are produced. Specifically, if the source approaches, the waves compress, leading to a higher perceived frequency (higher pitch), and if the source recedes, the waves stretch, resulting in a lower perceived frequency (lower pitch). The Doppler Effect has practical applications in various fields, including astronomy and medical imaging. The observed frequencyf’ = f (v-v 0 /v-v s )
Apparent wavelengthλ’ = λ (v-v s /v)
Understanding and applying these formulas is essential for solving problems related to sound waves in the NEET physics exam. If you want to explore and learn more about such formulas, you can join PW's NEET online coaching where a team of dedicated teachers personally mentors each candidate.|
NEET Important Formulas for 2025 |
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Sound Wave Formula FAQs
What is the formula for the wavelength of a sound wave?
The formula for the wavelength (λ) of a sound wave is given by:
λ = v / f
What is the basic formula of wave?
The equation of a sound wave can be derived from the basic wave formula. A simple form for a sinusoidal sound wave is:
y(x, t) = A * sin(2πft - (2πx/λ) + φ)
How do you calculate sound?
Sound can be measured using various parameters. The intensity (I) of a sound wave is given by:
I = P / A
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