IMO, one can definitely earn 20% of its investment in a month. So if you are trading with Rs.200,000 you should be able to make Rs.40,000. For high risk traders, 100% in a month is also possible.
On other side, you can also lose 20% of your capital in a month and high risk traders may find their account go belly up (they can loose 100% in a month). It really depends up on how much investment you are making and how much risk you are ready to take. In my experience no trader can make profits in 100% trades. I won't trade more then 33% of my capital.
Rs.2000 is good amount depends on where you live, if you live in mumbai earning rs.45000/month (considering average 22 trading days) this amount is very less for your future but if you live in jabalpur, MP then this is very good amount and you will be able to buy home in short term.