Question
The frequency of ultrasound wave is typically
–Solution
Ultrasound is a cyclic sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from "normal" (audible) sound based on differences in physical properties, only the fact that humans cannot hear it. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.
What will be printed from the below code?
List1 =[‘Ixambee’,’provides’,’best’,’mock’,’tests’]
print List1[2][-1]
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