There are two speakers at the front of the room. Each is outputting a 250Hz pure

Question

There are two speakers at the front of the room. Each is outputting a 250Hz pure tone. For each of the following situations, will you hear constructive interference (a loud noise) or destructive interference (soft or no noise). represents the wavelength of the 250Hz tone speakers the waves are exactly in phase speakers the waves are exactly in phase speakers the waves are exactly out of phase speakers the waves are exactly out of phase Constructive You are 2.5 away from speaker A; 3 away from speaker B and at the Constructive You are 2 away from speaker A; 3 away from speaker B and at the Constructive You are 4 away from speaker A; 5 away from speaker B and at the Destructive You are 3.5 away from speaker A; 3 away from speaker B and at the Submit Answer Incorrect. Tries 7/10 Previous Tries

Explanation / Answer

Constructive Interference will take place if the path difference between waves is integer multiple of wavelength.

In case 2 and 3 , the path difference is 1 lamda ( wavelength). So, that will be constructive. Case 1 and 3 , it's. 0.5 lamda, that is not integer multiple of wavelength. Therefore it will be destructive.

Answer:

Destructive

Constructive

Constructive

Destructive

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