[Orgmode] Changing fontsizes in a frame in org beamer

[Vikas Rawal]

I am using org to make a beamer presentation and would like to know
how to change font sizes of different elements in a frame. I would
like font size specification to apply to different elements of an
individual frame: the body, the item list, table, captions etc. What
would be the easiest way to define these for a frame? Can I use
Attr_LaTex? How?

Thanks,

Vikas