The temperature dependence of resistances of Cu and undoped Si in the temperature range 300-400 K, is best described by :
← JEE Main 2016 · 3 Apr · Shift 1
PhysicsSingle correct+4 / -1Question 14 of 90
JEE Main 2016 · 3 Apr · Shift 1, Physics question 14
Answer and worked solution
Official answer: C
A metal's resistance rises roughly linearly with temperature. In an intrinsic semiconductor the carrier density grows exponentially with T, so its resistance falls exponentially.