Transmission Of Heat Question 139
Question: The energy supply being cut-off, an electric heater element cools down to the temperature of its surroundings, but it will not cool further because
[CPMT 2001]
Options:
A) Supply is cut off
B) It is made of metal
C) Surroundings are radiating
D) Element & surroundings have same temp.
Show Answer
Answer:
Correct Answer: D
Solution:
When element and surrounding have same temperature. There will be no temperature difference, hence heat will not flow from the filament and it’s temperature remains constant.
BETA
