A) sound is diffracted through an opening having width equal to the wavelength of the sound.
B) sound is diffracted through an opening having width more than the wavelength of the sound.
C) sound is diffracted through an opening having width less than the wavelength of the sound.
D) diffraction of sound does not depend on the width of the opening.
Correct Answer: C
Solution :
| Option [c] is correct. |
| Explanation: When the width of opening is comparatively less than the wavelength of sound wave, the sound spread out much better i.e. better diffraction occurs. |
| When the width of the opening is larger than the wavelength, the wave passing through the opening does not spread out much on the other side. |
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