Question
Wed February 22, 2012 By: Aditi Sharma

a source of wave produces 20 crests and 20 troughs in 0.2 seconds.distance between a crest and next trough is 50cm.find wavelength and frequency.

Expert Reply
Thu February 23, 2012
Distance between two successive crusts or troughs is knowns as wavelength So Wavelength = 100 cm (because distance between crust & trough is 50 cm) In 0.2 seconds, it complete 20 waves in 1 second , it will complete 20 * 5 = 100 crests. So Frequency is 100 Hz.
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