A brass rod and a lead rod each 80cm long at 0°C are clamped together at one end with their free ends coinciding…

Q: A brass rod and a lead rod each 80 cm long at 0°C are clamped together at one end with their free ends coinciding. The separation of free ends of the rods if the system is placed in a steam bath is ( α_brass = 18 x 10^-6/°C and
α_lead = 28 x 10^-6/°C)

(a) 0.2 mm

(b) 0.8 mm

(c) 1.4 mm

(d) 1.6 mm