A
To convert solar radiation directly into high-pressure steam for turbine generation
B
To directly convert temperature differences into electric voltage and vice versa
C
To absorb high-frequency electromagnetic waves and shield electronic equipment from interference
D
To store electrical energy chemically under cryogenic temperature conditions
Correct answer: (b) To directly convert temperature differences into electric voltage and vice versa
Explanation
Option B is correct because a thermoelectric material is capable of directly converting temperature differences into electric voltage and vice versa. The other options misstate its core functional property.
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