Speed of a transverse wave on a straight wire (mass 6.0 g, length 60 cm and area of cross-section 1.0 mm²) is 90 ms⁻¹. If the Young's modulus of wire is 16 10¹¹ Nm⁻², the extension of wire over its natural length is :
JEE Main 2020 · 7 Jan, Morning shift · Q8500