An ideal gas in a heat engine operate between two thermal reservoirs in a cyclic process. Absolute temperature of hot reservoir is $T_{H}$ and cold reservoir is $T_{c}$ . There is no heat exchange of gas with surrounding except with thermal reservoirs. Then choose the correct option(s).

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

If the cycle is reversible, then then the entropy of gas increases in every cycle

If the cycle is irreversible, then efficiency of the engine is smaller then $1 - \frac{T_{c}}{T_{H}}$

If the cycle is irreversible, then the entropy of gas decreases in every cycle

If the cycle is reversible, then efficiency of the engine is $1 - \frac{T_{c}}{T_{H}}$

answer is A, D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

entropy is a state function.

If the cycle is reversible, then efficiency of the engine is $1 - \frac{T_{c}}{T_{H}}$

If the cycle is irreversible, then efficiency of the engine is smaller then $1 - \frac{T_{c}}{T_{H}}$

Watch 3-min video & get full concept clarity