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period aia heue4A source produces 15 crests and 15 troughs in3 seconds. When the second crest is produced, thfirst is 2 cm away from the source. Calculate (a) thwavelength, (b) the frequency, and (c) the wavspeed |
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Answer» time period T = 1 ÷ frequency sec. Wavelength = 2 cm.Number of waves produced per second = 15/3= 5.So Frequency = 5 Hz. Speed of the wave = frequency* wavelength= 5 * 2 = 10 cm/sec. |
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