Three unifonn thin aluminum rods each of length 2m form an equilateral triangle PQR as shown in the figure. The mid point of the rod PQ is at the origin of the coordinate system. If the temperature of the system of rods increases by 50^(@) C, the increase in y-coordinate of the centre of mass of the system of the rods is _mm. (Coefficient of volume expansion of aluminium 12 sqrt(3) xx 10^(-6) k^(-1) )

Three unifonn thin aluminum rods each of length 2m form an equilateral

1.	Three unifonn thin aluminum rods each of length 2m form an equilateral triangle PQR as shown in the figure. The mid point of the rod PQ is at the origin of the coordinate system. If the temperature of the system of rods increases by 50^(@) C, the increase in y-coordinate of the centre of mass of the system of the rods is _mm. (Coefficient of volume expansion of aluminium 12 sqrt(3) xx 10^(-6) k^(-1) )
Answer» 0.05 0.1 0.2 0.8 Answer :C