There is no official notification from NTA regarding Bonus answers for wrong questions but few coaching institutes claimed that total 13 questions were wrong in JEE Main Jan 2019 exam which was conducted in 8 session between 9-12th Jan 2019. 2 Questions were wrong in 11th Jan Morning Session Paper in physics subject. Please refer below article to check all the wrong questions:

https://www.entrance360.com/engineering/wrong-questions-in-jee-main-january-2019/

Previously JEE Main was conducted by CBSE, They give  bonus marks for the wrong Answers & Questions. Please wait for NTA official notification,

Good Luck!

Hey leelavati

The result will be declared on 31 St of January 2019.

And it will be published after all the corrections made possible in answer key after examine the challenging answer that committee will receive from students.

So don't worry you will get fair result.

And if bonus is for you it will be for everyone also.

So good luck