Now i want to ask 498a case once filed, how it can be withdrawn or there is any power with high court to dismiss 498a.
You can apply for quash of charge sheet under section 482 of cr.p.c. in which your wife as a respondent can file an affidavit stating that you both have compromised and made an out of court settlement hence she has no objection, as a defacto complainant, to the court considering quash petition filed by the petitioner. The high court, based on the affidavit of the respondent/wife, shall quash the case under 498a and you can be discharged from the case.