What about if I will open one more adsense account on my sister name who is living in other part of this country.

Postal address and all information will be provided of her address, here I will open an account under her name and will deposit the cheque into that account.

Kindly help me.

I don't think it is safe to have 2 adsense account from the same address and same ip. But if it is from a different ip and same address, ok.