SITUATION. EM-010 shows a pellet about to be fired from a sling. The total unstretched length of the rubber band is 60 mm. The rubber band elongates 1 mm for every 15N force. Given: a = 100 mm, b = 40 mm 9. a

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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.