AIIMS2008Physics-Elasticity
AIIMS 2008 Physics Work Done in Stretching a Wire MCQ Question
Type: MCQ-numerical-Medium-Class 11
If a wire is extended to a new length l', the work done is
A
Yl⁴/(l-l') l
B
Yl/ l²(l-l')²
C
1/2 Yl²(l-l')²/l
D
2 Yl²(l-l')²/l
Correct Answer
Option C
Detailed Explanation
Y = F/A Δl/l
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