BITSAT Physics Thermal Properties Of Matter Online Test Set B

A steel rod of length 50 cm has a cross-sectional area of 0.4 cm². What force would be required to stretch this rod by the same amount as the expansion produced by heating it through 10¼C. (_ = 10^ذ5 Kذ1 and Y = 2 _ 10¹¹ N/m²