JEE Mains Model Paper 5

A silver wire of length 10 metre and cross-sectional are 10−8m2 is suspendedvertically and a weight of 10 N is attached to it. Young's modulus of silver andits resistivity are 7 × 1010 N/m2 and 1.59 × 10−8 Ω − m respectively. Theincrease in its resistance is equal to (keeping volume constant)