In a good thermos flask, heat loss is reduced through the following features EXCEPT?
A
the lens surface
B
the insulating cork
C
silvered walls
D
the cork lid
Verified Correct Answer: A.
Physical Principles & Numerical Solution
The silver coating on the inner bottle of a thermos flask is used to prevent heat transfer by radiation
Source: WAEC / JAMB / NECO Classroom Archive (Record #14044)