Hi @KarthikShanth ,

Thank you for posting query in Microsoft Q&A Platform.

I have gone through documentation of MongoDB connector in ADF . It looks The service supports consuming BSON document in Strict mode . Make sure your filter query is in Strict mode instead of Shell mode. More description can be found at MongoDB manual .

Below is sample filter expression.
"filter": "{datetimeData: {$gte: ISODate(\"2018-12-11T00:00:00.000Z\"),$lt: ISODate(\"2018-12-12T00:00:00.000Z\")}, _id: ObjectId(\"5acd7c3d0000000000000000\") }"

Kindly check below documentation for more details and see if that helps. Please let us know how it goes.
https://learn.microsoft.com/en-us/azure/data-factory/connector-mongodb?tabs=data-factory

Did you get chance try using $filter ? Kindly try and see if that helps. Below is link for more details on filter in MongoDB.
https://www.mongodb.com/docs/manual/reference/operator/aggregation/filter/