A rod of length 50 cm is made of metal A and elongates by 0.2 cm when it is heated from 0^@C to 100^@C . Another rod made of metal B is of length 60 cm and elongates by 0.18 cm when heated from 0^@C to 100^@C . A composite rod of length 80 cm is made by welding pieces of rods A and B, placed end to end. When metal C is heated from 0^@C to 50^@C , it gets elongated by 0.08 cm.The length of the rod of metal B in the composite rod is

A rod of length 50 cm is made of metal A and elongates by 0.2 cm when

1.	A rod of length 50 cm is made of metal A and elongates by 0.2 cm when it is heated from 0^@C to 100^@C . Another rod made of metal B is of length 60 cm and elongates by 0.18 cm when heated from 0^@C to 100^@C . A composite rod of length 80 cm is made by welding pieces of rods A and B, placed end to end. When metal C is heated from 0^@C to 50^@C , it gets elongated by 0.08 cm.The length of the rod of metal B in the composite rod is
Answer» 10 CM 20 cm 30 cm 40 cm Solution :`L._B = 40 cm`