The Youngs modulus of a wire of length \( L \) and radius \( r \) is \( Y \mathrm{~N} / \mathrm{... VIDEO
The Youngs modulus of a wire of length \( L \) and radius \( r \) is \( Y \mathrm{~N} / \mathrm{m}^{2} \). If the length and radius are reduced to \( L / 2 \) and \( r / 2 \), then its Youngs modulus will be
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