Doubt from thermodynamics


Q1 option C explain ...last word is steady state is reached.

Q2, options are on next page

For question no 8

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For Q 5
Thermal radiation is directly proportional to 4th power of temperature.
For Q 6
In steady state no heat transfers so T must be constant

For Q 6 I got it wrong first
At the steady state the end near the furnace is hotter than the end far from the furnace
Same logic is applicable for Q1



As initial temp. =final Temp.
So change in internal energy is zero