Bitcoin is a very fast booming and rising currency and I have been hearing about there being a physical bitcoin I mean in the form of a metal. Now if this is possible I would like to know if bitcoin would be a generally accepted means of payment in the next years to come and what are the possibilities of other currencies meeting it( I mean in demand and supply)
The physical bitcoin that you are referring is called "Casascius bitcoin".
https://www.casascius.comHowever, I do not think that the physical bitcoin will be mass produce to be used like the usual coins we have. However, you can spend it because the private key is embedded on the coins if I'm not mistaken. So you can import it directly to your Core wallet or Electrum.