Let \(f:R-\left{\frac{\alpha }{6}\right}\to R\) be defined by \(f(x)=\frac{5x+3}{6x-\alpha }\). Then the value of \(\alp…

Let \(f:R-\left{\frac{\alpha }{6}\right}\to R\) be defined by \(f(x)=\frac{5x+3}{6x-\alpha }\). Then the value of \(\alpha\) for which \((f∘f)(x)=x\), for all \(x\in R-\left{\frac{\alpha }{6}\right}\), is :

[JEE Main 2021, 20 Jul (Shift 2)]