[Tex/LaTex] Beamerposter scale parameter, text font size and title font size

beamerbeamerposterfontsizepaper-size

I want to create a poster with beamerposter with pagesize 240cm (width) x 120cm (height) with two columns.
Will the following line of code produce what I need?

\usepackage[size=custom,width=240,height=120,scale=1,debug]{beamerposter}


If so, what does the scale option do? If I set it equal to 2 then will my font size and paper size double?

Secondly, I need to have the title font size of 10cm and text size of 5cm (with the title in the center).
How can I code this?

I am not very expert but recently I am also working with beamer to create a poster. The scale option is for your font size. Like I use
\documentclass[final, 12pt]{beamer}

I choose scale size 1.4, then I choose \Large size for my title, so it will multiply by 1.4 than the usual font size (\Large in 12pt Beamer is 16.24pt). Now you have to calculate for your's one...