A sound wave of wavelength 0.31 m is travelling in air. The pressure at a point varied from (10^-5-14) pascalto( 10^5+14) pascal and particles vibrate in SHM with amplitude 5.5\ast10^-6m. Bulk modulus of air is

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Q. Calculate the bulk modulus of air from the following data for a sound wave of wavelength

35 c m

travelling in air. The pressure at a point varies between

(1.0 \times 10^{5} \pm 14)

Pa and the particles of the air vibrate in

S H M

of amplitude

5.5 \times 10^{- 6} m

Calculate the bulk modulus of air from the following data about a sound wave of wavelength 35 cm travelling in air. The pressure at a point varies between $(1.0 \times 10^{5} a n d 14)$ Pa and the particles of the air vibrate in simple harmonic motion of amplitude $5.5 \times 10^{- 6}$ m.

Q. A sound wave of wavelength

40 cm

travels in air. If the difference between the maximum and minimum pressure at a given point is

1 \times 10^{- 3} {Nm}^{- 2}

, find the amplitude of vibration of the particles of the medium. The bulk modulus of air is

1.4 \times 10^{5} {Nm}^{- 2}

Q. A sound wave of wavelength

40 cm

travels in air. If the difference between maximum and minimum pressures at a given point is

1.0 \times 10^{- 3} {N/m}^{2}

, then find the amplitude of vibrations of the particles of the medium.
[Bulk modulus of air is

1.4 \times 10^{5} {N/m}^{2}

]

For sound waves in air with frequency 1000 Hz, a displacement amplitude of $1.2 \times 10^{- 8}$ m produces a pressure amplitude of $3.0 \times 10^{- 2}$ Pa. What is the wavelength of these waves? (Provided Bulk modulus of Air = $1.42 \times 10^{5} P a$ )

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