Physics, asked by Akhil839, 10 months ago

why does the temp of every part of metallic rod become constant in steady state​

Answers

Answered by Anonymous
4

(2) Steady state : After sometime, a state is reached when the temperature of every cross-section of the rod becomes constant. In this state, no heat is absorbed by the rod. ... The direction of flow of heat through a conductor at any point is perpendicular to the isothermal surface passing through that point.

Answered by sriwin
2

Explanation:

In a conducting rod the rate of flow of heat

H' is dependent on its cross sectional area 'A

length of the rod 'I and temperature

gradient, 'dT/dx.Here dT is the temperature

difference across the length 'dx' of the rod in

the direction of heat flow.If 'K' is thermal

conductivity of the material of the rod, then

H-KA(AT/dx)

In steady state rate of flow of heat 'Is

constant, thermal conductivity of the rod

material K Is constant and 'A' the cross

sectional area is also constant. This leads us

that the temperature gradient (dT/dx) is

consonant le

dT/dx-constant-(-m) (say)

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