i think the answer is A as the process X is of radiation and process Y is convection and process Z is conduction .
a medium is not required in radiation .
convection takes place in fluids .
that is why i think the answer is option A
i think the answer is A as the process X is of radiation and process Y is convection and process Z is conduction .
a medium is not required in radiation .
convection takes place in fluids .
that is why i think the answer is option A