Question

Which mode of heat transfer is thwarted by the shiny surfaces in a thermos flask?

MSCERT Class 7 General Science Ch 4 Transmission of Heat

Answer 1

Radiation mode of heat transfer is thwarted by the shiny surfaces in a thermos flask.

Answer 2

Radiation mode of heat transfer is thwarted by the shiny surfaces in a thermos flask as they contain silver surfaces or other heat insulated substances