The extension in a string, obeying Hooke’s law, is x. The speed of sound in the stretched string is v. If the extension in the string is increase to 1.5 x, the speed of sound will be: is x. The speed of sound in the stretched string is v. If the extension in the string is increase to 1.5 x obeying Hooke's law The extension in a string the speed of sound will be: September 14, 2020 Category: Cengage NEET by C.P Singh , Chapter 17 - Sound Waves , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related