in the given figure if velocity of wave is 320m/s.
Find the time period of the wave
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A to C is the wavelength as per the graph .. which is 20cm + 20 cm = 40 cm
Wave length = 40 cm = 0.4 m
Velocity = 320 m/s
Frequency = Velocity / Wavelength
= 320 / 0.4
= 800 Hz
Time period = 1/ Frequency
= 1/800
= 0.00125 seconds
Hope this helps
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