Are there ratchet and clank roms for ps2 emulators?

Answer 1

technically no, they ain't called Rom's, they're called Isis's, but they are allot harder to get than Rom's, take up more room and need to be downloaded in parts due to the size of the game, usually about 5 parts but some have 15!

And even if you downloaded the game and emulator, you'd need a very very very good graphics card for the game (PS2 games don't let you lower graphics settings so if you find your comp lagging your pretty much scuffed), and odds are the emulator would need about a dozen plug ins, I tried a PS1 emulator once, couldn't get the damn thing to work no matter what, you're better off going to amazon or eBay, it ain't free but it's better than getting a virus on your computer and filling up half your hardrive with one game.