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In a large room , a person receives dire...

In a large room , a person receives direct sound waves from a source `120 m` away . He also receives waves from the same source which reach him after being reflected from the ` 5 - m` high ceiling at a point halfway between them . For which wavelengths will these two sound waves interfere constructively ?

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To solve the problem step by step, we need to determine the conditions for constructive interference of the sound waves reaching the person from the source directly and after reflection from the ceiling. ### Step 1: Understand the Setup - The source of sound is located `120 m` away from the person. - The sound wave reflects off a ceiling that is `5 m` high at a point halfway between the source and the person. ### Step 2: Determine the Path Lengths - The direct path length from the source to the person is `120 m`. ...
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