Write short note on Rectilinear flow of heat
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Explanation:
Heat will be conducted towards the free end. ... The temperature at any section of the rod perpendicular to its length increases and after some time it becomes steady; before this state, it was variable state when the temperature varied with time.
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Answer:
ᴄᴏɴꜱɪᴅᴇʀ ᴛʜᴇ ꜰʟᴏᴡ ᴏꜰ ʜᴇᴀᴛ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ꜱᴇᴄᴛɪᴏɴꜱ ᴩ ᴀɴᴅ q ᴀᴛ ᴅɪꜱᴛᴀɴᴄᴇ x ᴀɴ x + ᴅx ꜰʀᴏᴍ ᴛʜᴇ ʜᴏᴛ ᴇɴᴅ ʙᴇꜰᴏʀᴇ ᴛʜᴇ ꜱᴛᴇᴀᴅy ꜱᴛᴀᴛᴇ ɪꜱ ʀᴇᴀᴄʜᴇᴅ ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏꜰ ʜᴇᴀᴛ q ɪꜱ ᴜꜱᴇᴅ ɪɴ ᴛᴡᴏ ᴡᴀyꜱ . ᴀ ᴩᴀʀᴛ ᴏꜰ ᴀ ʜᴇᴀᴛ ɪꜱ ᴜꜱᴇᴅ ɪɴ ʀɪꜱɪɴɢ ᴛʜᴇ ᴛᴇᴍᴩᴇʀᴀᴛᴜʀᴇ ᴏꜰ ᴛʜᴇ ʀᴏᴅ ᴀɴᴅ ᴛʜᴇ ʀᴇᴍᴀɪɴɴɪɴɢ ʜᴇᴀᴛ ɪꜱ ʟᴏꜱᴛ ʙy ʀᴀᴅɪᴀᴛɪᴏɴ ꜰʀᴏᴍ ᴛʜᴇ ꜱᴜʀꜰᴀᴄᴇ .
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