Hello Sandhya

First of all congratulations for your result.

Sorry to inform you that in 400 marks in Neet you can't be able to get admission in any government Medical College in India because the cut off for general category usually goes to 500 and above.

But you can get admission in private Medical Colleges using your Neet score.

You can take the help of this link to check all the Neet Medical Colleges last year's cut off:

https://medicine.careers360.com/articles/neet-cut-off

Also you can predict your Neet College using this link:

https://medicine.careers360.com/neet-college-predictor

So I hope you find this helpful 

Thank you 

Good luck.