pair of speakers produce sound waves of identical frequency. The speakers are in phase (i.e. the waves start the same way) and the frequency is 170 Hz. Assume the speed of sound in this room is 340 m/s. a) What is the wavelength (in meters) of the sound waves that the speakers are producing? Show work! b) You wish to arrange the speakers so that when they are both playing, you hear little to no sound! How much further from your ear (in meters) should speaker 2 be than speaker 1?

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.