Year: 2023
Topic: Thermal properties of matter
Time :
1. The amount of elastic potential energy per unit volume (in SI unit) of a steel wire of length 100 cm to stretch it by 1mm is (if Young's modulusof the wire = 2.0 × 10
11
Nm
−2
) :
(1). \(10^{11}\)
(2). \(10^{17}\)
(3). \(10^7\)
(4). \(10^5\)