Ideal gas is taken through the process shown in the figure :

Options

A. in process `AB`, work done by system is positive
B. in process `AB`, heat is rejected
C. in process `AB`, internal energy increases
D. in process `AB` internal energy decreases and in process `BC`, internal energy increases.

Answer

B

Explanation

`ArarrB` temperature is constant and pressure is increasing`:.` volume is decreasing. So `ArarrB` work done is negative,
`BrarrC` pressure is constant and temperature is decreasing. So volume decreases.Hence work done is negative