Expected Marks Calculation for Doing Class 12 Physics Chapter-wise Derivations:

1. Understanding the Importance of Derivations:
- Derivations in Physics are crucial as they help in understanding the underlying concepts and principles.
- By doing chapter-wise derivations, you will gain a deeper insight into the subject and improve your problem-solving skills.

2. Number of Derivations and Marks Allocation:
- The link provided contains a list of chapter-wise derivations for Class 12 Physics.
- If you do all the derivations listed, you will cover a significant portion of the syllabus.
- Each derivation carries a certain weightage in exams, so doing all of them can potentially earn you a substantial amount of marks.

3. Scoring Potential Marks:
- The exact number of marks you can score by doing these derivations depends on various factors such as your understanding, presentation, and accuracy.
- Typically, each derivation can fetch you anywhere from 2 to 5 marks in exams.
- If you thoroughly understand the derivations, present them neatly, and show all steps clearly, you can expect to score well in the exams.

4. Potential Score Estimate:
- Assuming an average of 3 marks per derivation and a total of 50 derivations in the list, you could potentially earn around 150 marks by doing all the derivations.
- However, this is just an estimate, and your actual score may vary based on your performance and the specific requirements of your exams.

In conclusion, doing the chapter-wise derivations in Class 12 Physics can significantly boost your understanding of the subject and help you score well in exams. Aim to thoroughly grasp the concepts, practice regularly, and present your derivations effectively to maximize your marks potential.