To obtain a rape conviction, for example, it is necessary to first prove that the victim was forced to have sex against his or her will. Physical evidence can be useful in such cases. Is the victim's clothing torn?
例如，要證實強暴罪，須先證實性行為是在被害人被強迫下進行，因此像被撕破的衣服、身上的傷痕都屬這類物證。