The percentage increase in the speed of transverse waves produced in a stretched string if the tension is increased by 4%, will be __________%.
Answer (integer)
2
Solution
Speed of transverse wave is <br><br>$V = \sqrt {{T \over \mu }}$<br><br>$\ln V = {1 \over 2}\ln T - {1 \over 2}\ln \mu$<br><br>${{\Delta V} \over V} = {1 \over 2}{{\Delta T} \over T}$<br><br>$= {1 \over 2} \times 4$<br><br>$\Rightarrow$ ${{\Delta V} \over V} = 2\%$
About this question
Subject: Physics · Chapter: Waves · Topic: Wave Motion and Types
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