Hello,
In strict Legal terminology, annulment refers only to making a voidable marriage null; if the marriage is void ab initio, then it is automatically null, although a legal declaration of nullity is required to establish this.
Annulment is a legal procedure for declaring a marriage null and void. With the exception of bigamy and not meeting the minimum age requirement for marriage, it is rarely granted. A marriage can be declared null and void if certain legal requirements were not met at the time of the marriage. If these legal requirements were not met then the marriage is considered to have never existed in the eyes of the law. This process is called annulment. It is very different from divorce in that while a divorce dissolves a marriage that has existed, a marriage that is annulled never existed at all. Thus unlike divorce, it is retroactive: an annulled marriage is considered never to have existed.
Section 5 lays down Condition for a Hindu Marriage;
Annulment Process
To get an annulment, a person first needs to meet the residency requirements of the state that they live in. The jurisdictional requirements are similar to those required for dissolution or divorce: one of the parties must live in the state where the marriage annulment is filed for a continuous ninety-day period. Similar to a divorce filing, marriage annulment case proceeds with a filing, petition, summons, and ancillary documents. An annulment case can be initiated by either the husband or the wife in the marriage. The grounds for marriage annulment are stated in the petition. The annulment procedure is similar to that of a standard divorce. A divorce can be much more complicated than an annulment.
Effects of Marriage Annulment
Annulling a marriage simply erases it from the records, as if it never took place. The result of a marriage annulment is a decree that the marriage never existed. It nullifies the marriage, returning the parties to their prior single status.
It's a common misconception that short marriages can be annulled, but the length of the marriage is not a qualifying factor. Many times, annulments occur after very short marriages, so there is no need to divide assets or debts or decide custody of children produced by the marriage. In the case of a longer marriage that is annulled, the court will divide the property of the parties.