how does virtual memory different from main memory and secondary memory​

A secondary memory device is comparable to a spinning magnetic disk or, in modern times, an SSD. Basically, it moves slowly (even an SSD is slow compared to the main memory). Data is stored there as files. A software can fool itself into believing it has a collection of linear address blocks that it can use as ordinary memory by creating the illusion of virtual memory. Except in cases where the total quantity of virtual memory needed by all running processes exceeds the physical memory attached to the computer, it has nothing to do with the idea of secondary storage. In that instance, relatively unoccupied pages will be transferred to secondary storage; nevertheless, this is more of a "side effect" of secondary storage's handy proximity and size compared to main memory.Learn more about memory at:https://brainly.com/question/13147674