Why here heat absorbed is reversible ..why not irrereversivle.. ows that enropy claungo and t for a revers t the y imally slowly

Qirr can't be integrated.

This Qrev is heat exchange for the system which is reversible in nature.

https://youtu.be/JA_JK3f8BGo

From 9 min onwards

ok mam

mam but I. reversible entropy is almost constant isn't it

Absolutely Yes

then why we take this

reversible case

System+surrounding is constant.

For system we need to calculate entropy.

ok mam thanks

why it's reversible everytine

just we are imaging it is reversible that means it is ideal system

entropy is defined by recalling our discussion of the Carnot engine. We noted that for a Carnot cycle, and hence for any reversible processes,

The reason is that the entropy S of a system, like internal energy U, depends only on the state of the system and not how it reached that condition.

I didn't get this

here process is mentioning reversible shweta

why not irrereversivle

see...you can mentioned both the system

for reversible and irreversible

ok sir

sir is there any solution book for ms Chauhan organic book

wait let me check it

shweta have you got this or any doubt then clear it

sir I think in reversible heat the entropy change is almost constant

yes and in irreversible the some heat is lost

so

reversible kyun hai JB entropy hi constant rhegi

shweta in irreversible process heat is transfer in pause and continue process so some heat is lost...but in reversible process it doesn't happen

this I got

please mark the ans too😊

ok sir 👍 got it