Database
[{_id:"Toy",name:"Toyname",child:[{item:"Toy1",isActive:"1",Type:"New"},{item:"Toy2",isActive:"2",Type:"Old"},{item:"Toy3",isActive:"1",Type:"New"}]}]
Query
db.collection.find({"_id":"Toy"},{"child":{"$elemMatch":{"isActive":"1"}}})