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.
Constructive Destructive  You are 2 away from speaker A; 3 away from speaker B and at the speakers the waves are exactly out of phase.
Constructive Destructive  You are 4.5 away from speaker A; 4 away from speaker B and at the speakers the waves are exactly out of phase.
Constructive Destructive  You are 3 away from speaker A; 2 away from speaker B and at the speakers the waves are exactly in phase.
Constructive Destructive  You are 2.5 away from speaker A; 3 away from speaker B and at the speakers the waves are exactly in phase.

Explanation / Answer

1. constructive (Total path difference is )

2. Destructive (Total path diff. is 0.5)

3. Constructive (Total path diff. is )

4. Destructive (Total path diff. is 0.5)

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