Hi Deepika,

Follow the below mentioned steps to get online form for admission in IIT JAM physics:-

• Visit https://joaps.iisc.ac.in/
• To register, click on New User? 'Register Here'.
• Enter the required details.
• After the successful registration, you will get an enrolment ID on your registered email ID and password.
• Now login using the same your credential on the same website.
• Enter all the personal, academic and contact details, select city and tap save.
• Now, upload the required documents.
• Pay the application fee.

Refer here for more info - https://university.careers360.com/articles/jam#IIT-JAM-Application-Form-2021

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!