Year: 2024
Topic: Thermal properties of matter
Time :
1.
The maximum elongation of a steel wire of 1m length if the elastic limit of steel and its Young's modulus, respectively, are 8 × 10
8
Nm
−2
and 2 ×10
11
Nm
−2
, is:
(1). 4 mm
(2). 0.4 mm
(3). 40 mm
(4). 8 mm