There's nothing to worry if you've done science PCM and you're interested in arts. It definitely has a wide scope,passing 12th class is just a beginning there's alot more to explore in the world and nothing is wrong in opting for something different. Infact it would obviously be better cause it's of your interest.

Allthe fields are equally important,gone are those days when science was considered superior and arts was considered inferior. Go with the flow and do things according to your interest and you will definitely excell in your field.

Comparing these two wouldn't be fair,both have different scopes and it depends on the hard work and dedication you put in for your work. Don't get confused and don't listen to people just listen to yourself and let your heart decide. If you still aren't able to decide then let me know I'll be happy to help you out 

I hope you find a good field for yourself

Good luck 

If you are more interested in arts than science and then yes arts has many great career option. Don't confuse between arts and science just choose your ambition and word hard for it. In arts as well as in science student has to work hard for their bright future. Many students choose their stream but only those will become successful who work hard.

There are many options after arts stream and the most successful option is IAS. Law is also a good option, physiology,philosophy. Many students apply for SSC exam. Don't confuse both stream are good in their own way. Still if you have any doubt,you can ask here.

Good luck.