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ICSE Class 10 Physics 2019 Solved Paper

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Question : 40
Total: 74
If the free end of the string moves through a distance x , find the distance by which the load is raised.
Solution:  
‌∵‌‌‌ V. R. ‌=‌
dE
dL

‌∴‌‌2=‌
x
dL

‌⇒‌‌dL=‌
x
2
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