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NEET 2020 Physics and Chemistry

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Question : 1

Total: 90

A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L1 when mass M is suspended from its free end. The expression for Young’s modulus is :

Mg(L1−L)
AL
MgL
AL1
MgL
A(L1−L)
MgL1
AL

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