A bar of bronze and a bar of steel are placed between two immovable supports, A and B as shown in the figure. The physical constant are : (where L = Length of bars, A = cross-sectional area, α = linear coefficient of thermal expansion, E = Young’s modulus)Steel BronzeL = 0.5 m L = 0.75 mA = 6 × 10-4m2 A = 12 × 10-4 m2α = 12 × 10-6/°C α = 20 × 10-6/°CE = 200 GPa E = 100 GPaThe stresses in the steel and bronze, when temperature drops by 50°C is

A bar of bronze and a bar of steel are placed between two immovable su

1.	A bar of bronze and a bar of steel are placed between two immovable supports, A and B as shown in the figure. The physical constant are : (where L = Length of bars, A = cross-sectional area, α = linear coefficient of thermal expansion, E = Young’s modulus)Steel BronzeL = 0.5 m L = 0.75 mA = 6 × 10-4m2 A = 12 × 10-4 m2α = 12 × 10-6/°C α = 20 × 10-6/°CE = 200 GPa E = 100 GPaThe stresses in the steel and bronze, when temperature drops by 50°C is
A.	Tension
B.	Compression
C.	Shear
D.	None of these
Answer» B. Compression