MHT CET 2023 Physics question

Which one of the following is based on convection?

(A)Heating of a copper utensil
(B)Heating a room by heaterCorrect
(C)Heating of Iron rod
(D)Heat transferred from sun to earth

Answer: (B)

Solution

Convection is the transfer of heat by the actual bulk movement of a fluid (liquid or gas). A room heater warms the air near it; the hot air rises and cooler air moves in to replace it, setting up a circulation that warms the whole room, so (b) is convection.

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Question ID VK-097810