A steel wire AB of length 100 cm is fixed rigidly at points A and B in an aluminium frame as shown in the figure. If the temperature of the system increases through 100°C, then the excess stress produced in the steel wire relative to the aluminium?αAl=22×10−6/0C and αsteel =11×10−6/∘C young's Modulus of steel is 2 × 1011 Nm–2.