In the equation, PVn = constant, if the value of n is in between 1 and y ( i .e ., C_ P C_ V ), then it represents a reversible __________ process.

Answer: Option B

$$P{V}^n=\text{constant},$$    if $$n$$ lies between the $$1$$ and $$y\left(\frac{c_p}{c_v}\right)$$  then the process is known as polytrophic process when $$n=1$$  it is called isothermal process and when $$n=y$$  it is called as adiabatic process.