My learnings from Physical delivery last month

Hi Siva, so if the call buyer on the stock not invoke a physical delivery, cant that be the same for a future long too?
In short, does future long will always be mean mandatory physical delivery (vice versa future short resulting in mandatory sell) but in case of option bought on a stock that is an optionality?

You said you wrote 510 ce call and price on expiry was less than 510 i…e 500 …so how come you still had to give delivery at 510? …you just earned premium because it expired out of the money for you? what I am missing here?