1.

Passage - I: A rod of metal X of length 50.0 cm elongates by 0. 10 cm when it is heated from 0°C to 100°C. Another rod of metal Y of length 80.0 cm elongates by 0.08cm for the same rise in temperature. A third rod of length 50 cm, made by welding pieces of rods X and Y placed end to end, elongates by 0.03 cm when its temperature is raised from 0°C to 50°C. The length of the rod of metal Y in the composite piece is

Answer»

10 cm
20 cm
30 cm
40 cm

Answer :D


Discussion

No Comment Found