I have developed powerpoint presentation. Will they work on an IPAD?

Presumably only if you have the Keynote app installed.

Also see:

Keynote for iPad: Best practices for creating a presentation on a Mac for use on an iPad

Update for alan... Other apps can see And work with PowerPoint stuff on the pad. I use quickoffice hd, and I think docs to go does as well. All of them will have issues with some power point feature, but they will work to some degree.

Thanks. It was my understanding that Keynote was the most 'compatible' . Not too sure what OP meant by DEVELOPED hence my use of he word 'presumably'.