Answer:
(1) Graph (i) Represents variation of conductivity of metals with temperature in which conductivity decreases with increase in temperature because on increasing temperature the movement of positively change kernels also increases which obstructs the flow of electrons.
(2) Graph (ii) Represents variation of conductivity of semiconductors with temperature.
Conductivity of semiconductors increases with in crease in temperature since movement of holes as well as electrons becomes faster.
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