That's a really low budget. Anyway. This is what I could find. You'll have to go through it and see if you find what you're looking for. Most laptops in your price range don't have a dedicated graphics card, they have an integrated one, which means its not separate from the motherboard, it's part of it, therefore the graphics memory will depend on the RAM.
Here are 5 decent laptops in your price range. The first one, the Acer seems like a decent deal.http://www.siliconindia.com/gadget/news/5-Laptops-Worth-Buying-for-Rs30000-nid-124958.html
Otherwise you can look at this one, which doesn't seem too bad either. http://www.pricedealsindia.com/laptop/HP-Presario-CQ62-452TU-Price-in-India-dpi124.php
It has a core i5 processor AND RAM upgradable to 8GB. That can go a long way in terms of performance.
Otherwise you can go through www.theitdepot.com and see if there's anything you like.
And check this list too... http://www.flipkart.com/laptops/pr?p=facets.price_range%255B%255D%3DRs.%2B25001%2B-%2BRs.%2B40000&p=facets.processor%255B%255D%3DIntel%2BCore%2Bi3%2B%25282nd%2BGeneration%2529&p=sort%3Dprice_asc&sid=6bo%2Cb5g&layout=grid
Lastly, I think this is a good deal for the price. http://www.flipkart.com/acer-aspire-e1-571-laptop-3rd-gen-ci3-4gb-500gb-linux-nx-m09si-014/p/itmdf2eyzjg6ppr2?pid=COMDF2EWVUGUHKWA&ref=0c060004-4d59-451f-ac69-f67b5b918d91