MHT CET Physics question
The extension in a wire obeying Hooke's law is . The speed of sound in the stretched wire is . If the extension in the wire is increased to , then the speed of sound in a wire is [MHTCET 2020, MHTCET 2020]
Answer: (B)
Solution
By Hooke's law the tension and , so for the speed becomes $ V =
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