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Heat Transfer

Q1: With increase in temperature, the thermal conductivity of non-metallic amorphous solids

A decreases

B increases

C remains constant

D first decreases upto certain temperature and then increases

ANS:B - increases

The thermal conductivity of non-metallic amorphous solids generally increases with an increase in temperature. This increase occurs because at higher temperatures, the atoms or molecules within the material vibrate more vigorously, leading to more efficient transfer of thermal energy through the material. So, the correct option is: increases



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