Introduction
Preparing for the UPSC Physics Optional exam requires a strong understanding of the subject matter. Online tutorials and video lectures can be valuable resources to enhance your preparation. Here are some effective ways to use them:

1. Choose reliable sources
- Look for reputable platforms that provide quality content specifically designed for UPSC Physics Optional preparation.
- EduRev is a reliable platform that offers a wide range of tutorials and video lectures on various subjects, including physics.

2. Understand the syllabus
- Familiarize yourself with the UPSC Physics Optional syllabus to know what topics to focus on.
- Break down the syllabus into smaller sections and prioritize topics based on their weightage in the exam.

3. Follow a structured approach
- Start with the basics before moving on to more complex topics.
- Follow a sequential order while watching tutorials or lectures to build a strong foundation.
- Take notes while watching the videos to reinforce your understanding and create a comprehensive study material.

4. Active learning
- Treat online tutorials and video lectures as interactive sessions rather than passive viewing experiences.
- Pause the video at regular intervals to solve practice questions related to the topic being taught.
- Engage with the content by asking questions, seeking clarification, and participating in online discussion forums or communities.

5. Supplement with textbooks
- Online tutorials and video lectures can provide a conceptual understanding, but textbooks are essential for in-depth knowledge.
- Refer to recommended textbooks that align with the UPSC Physics Optional syllabus to supplement your learning.

6. Practice previous year questions
- Solve previous year question papers to get a better understanding of the exam pattern and the type of questions asked.
- Analyze your performance and identify areas that require improvement.

7. Time management
- Create a study schedule that allocates specific time slots for watching online tutorials and video lectures.
- Stick to the schedule and set realistic goals to cover the syllabus within the available time.

8. Revise regularly
- Regular revision is crucial to retain the concepts learned through online tutorials and video lectures.
- Allocate dedicated time for revision and utilize EduRev's features like flashcards and quizzes to reinforce your knowledge.

Conclusion
Online tutorials and video lectures can be highly beneficial for UPSC Physics Optional preparation if used effectively. By choosing reliable sources, following a structured approach, actively engaging with the content, and supplementing with textbooks, you can enhance your understanding of the subject and increase your chances of success in the exam. Remember to practice previous year questions and revise regularly to consolidate your knowledge.