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प्रश्न
For hearing the loudest ticking sound heard by the ear, find the angle x in Fig.12.4.
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उत्तर
For hearing the loudest ticking sound, the angle made by incident sound with normal = angle made by reflected sound wave with normal = x
Now, the angle made by incident sound with normal
= 90° – 50°
= 40°
∴ x = 40°
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