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Grade: 12

                        

Sound waves from a loud speaker spread nearly uniformly in all directions if the wavelength of the sound is much larger than the diameter of the loudspeaker. (a) Calculate the frequency for which the wavelength of sound in air is ten times the diameter of the speaker if the diameter is 20 cm. (b) Sound is essentially transmitted in the forward direction if the wavelength is much shorter than the diameter of the speaker. Calculate the frequency at which the wavelength of the sound is one tenth of the diameter of the speaker described above. Take the speed of sound to be 340 m/s.

Sound waves from a loud speaker spread nearly uniformly in all directions if the wavelength of the
sound is much larger than the diameter of the loudspeaker.
(a) Calculate the frequency for which the wavelength of sound in air is ten times the diameter of the
speaker if the diameter is 20 cm.
(b) Sound is essentially transmitted in the forward direction if the wavelength is much shorter than
the diameter of the speaker. Calculate the frequency at which the wavelength of the sound is one tenth of the diameter of the speaker described above. Take the speed of sound to be 340 m/s.

3 years ago

Answers : (1)

Saurabh Koranglekar
askIITians Faculty
10341 Points
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9 months ago
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  • Previous Year Exam Questions


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