Without switching on, charger lights turns ON when phone gets connected?
Ok, i think answering my own question will be helpful for other to easily to get.Right,the Solution is 


  Keeping in an uncooked rice for some hours made phone to work.


As the comments to my question pointed out, definitely …


avoid drying it with heat (e.g. in the sun, on a heater, or with a hairdryer)
keep the battery out of the device during the "drying process" to avoid short-circuiting


Hope it helps others!