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Argiope sp., unfortunately I cannot tell you which one. I can't see much of the important details and many Argiope sp. from India have not a trustable ID.
Candidates are Argiope pulchella, Argiope aemula and Argiope anasuja, just to mention the most common ones.
Anasuja: http://spiderindia.lifedesks.org/files/s...
http://en.wikipedia.org/wiki/Argiope_pul...
Argiope aemula, which is most probably not yours:
http://www.spidersofcentralindia.com/arg...