Yes, you can get the admit card for the IIT JAM Physics exam if you applied under the OBC-NCL-Economically Weaker Section (EWS) category. Here are the details:

1. Eligibility Criteria:
To be eligible for the OBC-NCL-EWS category, you must fulfill the following criteria:
- You should belong to the OBC-NCL category as per the government regulations.
- You should meet the income criteria specified by the government for the EWS category.

2. Application Process:
During the application process for the IIT JAM exam, you need to fill in the necessary details and upload the required documents to apply under the OBC-NCL-EWS category. These documents may include:
- OBC-NCL certificate: You need to provide a valid OBC-NCL certificate issued by a competent authority.
- EWS certificate: You need to submit an EWS certificate issued by a competent authority, indicating your eligibility as per the income criteria.

3. Admit Card:
Once the application process is complete and the authorities have verified your documents, you will receive the admit card for the IIT JAM Physics exam. The admit card will contain important details such as your name, roll number, exam center, and exam date.

4. Downloading Admit Card:
To download your admit card, follow these steps:
- Visit the official website of IIT JAM.
- Look for the admit card download link.
- Enter your login credentials, such as your application number and password.
- Once logged in, you should be able to see the option to download your admit card.
- Click on the download button to save the admit card to your device.

5. Important Instructions:
- Make sure to carry a printed copy of your admit card to the exam center on the day of the exam.
- Along with the admit card, carry a valid photo ID proof for verification purposes.
- Read all the instructions mentioned on the admit card carefully and follow them during the exam.

6. Contacting Authorities:
If you face any issues related to the admit card or have any queries, you can contact the respective authorities through the contact details provided on the official website of IIT JAM.

Conclusion:
As an applicant under the OBC-NCL-EWS category, you are eligible to receive the admit card for the IIT JAM Physics exam. Make sure to fulfill the eligibility criteria, submit the required documents during the application process, and download your admit card from the official website.