Q. Critical speed of a ball mill depends on
A. the radius of the mill (shell) and the radius of the particles
B. the radius of the mill (shell) and the density of the particles
C. the radius of the balls and the radius of the particles
D. the radius of the balls and the radius of the mill (shell)
Ans: the radius of the balls and the radius of the mill (shell)
![Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Determine-the-correctness-or-otherwise-of-the-following-Assertion-A-and-the-Reason-R.jpg)
