Thermal conductivity of non-metallic amorphous solids with decrease in temperature
A). Increases
B). Decreases
C). Remain constant
D). May increase or decrease depending on temperature
Answer: B) Decrease s
explanation: Thermal conductivity of non metallic solid amorphous decrease with increase in temperature as the liquid expand the molecules move aparts.
At there electronic conductivity is practically non existent and due to increase in phonon conditions, thermal conductivity get increased.
Decreases
Thermal conductivity of non-metallic amorphous solids with decrease in temperature Decreases
1. The critical temperature is the temperature
3. Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of
4. Thermal conductivity of water at 20°C is of the order of
5. Which of the following sets are null sets:
6. Which of the following are true:
8. Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?
9. If A = {4n -3n -1: n ? N} and B = {9(n-1): n ? N}, then we have