Which of the following concepts is a method of heat transfer that does not require a material medium?
conduction
radiation
diffusion
convection
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my school...always correct the answers when my schollants comment
The correct answer is RADIATION

Ah my school! No be that naa! Na RADIATION. I know say na mistake. But make una correct am quick quick.

d the answer is wrong ,it is radiation becoz conduction is d mode of heat transfer in solids .while radiation requires no material medium for heat transfer

The selected answer is wrong:
Radiation is the process by which heat is transferred from a hotter to a cooler place without the heating of the intervening medium. Thus no material is required.
REF: Check: New school physics. Pg50

The selected answer is wrong:
the answer is radiation.... conduction requires a material medium also as convention (but in liquids) check newschool physics textbook
Conduction is the transfer of heat through solids
or stationery fluids. Convection uses the
movement of fluids to transfer heat . Radiation
does not require a medium for transferring heat;
this mode uses the electromagnetic radiation
emitted by an object for exchanging heat.
REF:
check this link:
www.google.com.ng/search?q=method+of+heat+transfer+that+does+not+require+a+material+medium%3F&client=ms-opera-mini-android&channel=new&gws_rd=cr&ei=jLptWZPZJcrSwQLswZKoDw


