JEE Main 7 Jan 2020 Shift 1 Solved Paper

Section: Physics

Question : 13 of 75

Marks: +1, -0

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 :

[7-Jan-2020 Shift 1]

0.02 mm
0.04 mm
0.03 mm
0.01 mm

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