Two point sources are 9. 00 cm apart and operating in phase with a common frequency of 9. 50 Hz. The distance from the right bisector to a point on the third nodal line in the interference pattern is 30. 0 cm. The distance from the midpoint between the two sources to the same point is 85.0 cm. a. Calculate the wavelength of the waves. b. Calculate the speed of the waves. (

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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.