title: How is virtual address space greater than physical address space?
body: <p>How is the Virtual address space greater than Physical address space ?</p>
  
  <p>suppose a Virtual 0x7000 maps to physical address 0x8000, can another virtual address lets say</p>
  
  <p>0x7500 map to the same physical location as 0x8000, if not then how can there be more virtual </p>
  
  <p>address and limited physical memory since mapping has to convert to physical address?</p>
  
  <p>Please help me understand this concept.</p>