Relationship between NPV and IRR

Question

I am looking for some more detailed information with regard to the relationship between net present value (NPV) and internal rate of return (IRR) (Note: the key factor here is the discount rate used). Furthermore, I was hoping someone might be able to explain how they might analyze projects differently if they had unequal projected years (ie Corporation A had a 5-year projection and corporation B had a 7-year projection).

https://myhomeworkwriters.com/blog/professional-law-dissertation-help/