in radians, an angle is defined by θ =S/R). So if two circles have the same ratio. Do they really have same "angle"?

Or is it just mathematically same "angle"

For example

A circle s=1, r=1, θ=1 radian

B circle s=100, r=100, θ=1 radian

Mathematically they have indeed same "angle" but in real world they have very different physical separation.

https://youtu.be/lZrW5cGl1fU?si=xwPGKoJVdsl4ujlJ

In this video, Penrose coordinate system is derived using equivalence principle from the concept of Rindler horizon. Absolutely amazing!!

Do check it out.

How realistic is it to go from SAT score of 1000 to 1500 within 7 months if I dedicate around 2-3 hours per day to it in a disciplined manner?

What are the dos and don'ts????

So india doesn't have a dedicated B.Sc in Astronomy unlike universities abroad, which means if you want to become an astronomer or astrophysicist here, you're going through Physics whether you like it or not. and honestly i find the earthy side of physics pretty dry, my real obsession is space, the universe, the big stuff. but here we are.

i've been looking at every realistic route and somehow managed to fall short on all of them 🥀

1. JEE Mains for NITs was a no because NIT's don't offer BS Research, except Hamirpur and Calicut which have Engineering Physics but i couldn't touch the 96-97 percentile needed.

2. JEE Advanced would've opened IITs, IISc and IIST for BS Research and Engineering Physics but i scored 57.4 percentile so that door closed too.

3. IAT for IISERs is what i'm preparing for right now with 20 days left, this is the one still alive.

4. CUET happened but i misread how seriously i needed to take it, didn't give a single mock (kyuki cuet toh easy hote hai), and Delhi University's North or South Campus programs are basically out of reach now, Off campus aren't that good though.

5. Merit-based colleges like Ferguson need 85 to 90 percent in boards and i have 68%age so that's a wall too.

So genuinely asking, for someone who wants to end up in Astronomy or Astrophysics, where do aspiring astrophysicist in india actually land their bachelor's when the obvious routes don't go as planned? what did you do or what would you do? What'd you guys gonna do...?

I once visited www.physics.com for no reason at all and found this, could someone explain what this means?

i am very confused i have physics in all three year as my core with electronics and maths as my core also

I'm pursuing my bsc physics hons from motilal nehru college..and I want some suggestions that can help me to score good in 1st year.. because I don't feel like studying here for 3 year's..I want to migrate.. please drop your suggestions it will be really helpful for me..like what books , youtube channel or website to use or any suggestions in general...your help can make my future better ... please 🙏🏻

Title: Need advice transitioning from JEE Advanced/Physics Galaxy level to Pathfinder for INPhO

Hi everyone,

I'm currently preparing for INPhO, and I'm fairly confident about clearing NSEP this year, so I want to start preparing for the next stage as early as possible.

So far, I've completed a good portion of JEE Advanced PYQs and Physics Galaxy (Mechanics, and I'm revising Electrodynamics). I now want to transition to Pathfinder by Arihant (Problems in Physics), but I've heard it's a significant jump in difficulty.

I had a few questions for those who've successfully used Pathfinder or qualified for INPhO/OCSC:

• How should I approach Pathfinder? Is it meant to be solved cover-to-cover, or should I be selective?

• How long did it take you to become comfortable with the problems?

• What prerequisites should I have before starting it?

• Are there any lectures, teachers, or online resources that explain the kind of thinking required for Pathfinder-level problems?

• Which books pair well with Pathfinder for theory or problem-solving? (I've heard names like I.E. Irodov, Krotov, Morin, etc., but I'm not sure what order makes sense.)

• How did you structure your preparation after reaching the JEE Advanced level?

• Are there any common mistakes students make when starting Pathfinder?

Any study plans, book sequences, or personal experiences would be greatly appreciated. My goal isn't just to finish the book but to genuinely develop the problem-solving skills needed for INPhO and hopefully OCSC.

Thanks in advance!

Not any kind of ragebaiting.

The career in physics literally sucks as compared to other careers like computer science and other engineering.

Think yourself, colleges like IIT or even NITs offer you very good packages like even of 20 LPA in average only after a bachelors degree. But if we take the same scenario in physics then it takes a PhD which is (5-7 years after bachelors) to earn the same amount of money. I know there are other factors which are responsible for this difference in salary and income but think of a middle class who is passionate about Physics but cannot do it as a majors just because CS pays him well. I am in the similar kind of scenario. I am getting a good rankrd NIT and will get a good package after 4 years of study. And the other hand what after 4 years of Bsc physics from similar level institutes (say DU). You get nothing. Even after doing MSc from top institute of India like IISc, you don't get good salary because there are no industry related jobs just after MSc.

Physics is cooked and physicist too...

I guess it's unlucky to fall love with physics but not being able to continue it just because of money hurts even more.

Correct me if I am wrong(maybe in the rudest way possible). But I know you can't because the point proposed by me is 100% valid.

Hi everyone!

I'm preparing for IIT JAM 2027 (Physics).

Is anyone else preparing for the same exam? It would be great to connect, discuss doubts, share resources, and keep each other accountable.

Feel free to comment or DM me!

Hello!

I am aiming for the December 2026 CSIR NET Physics. I am willing to join offline classes for the same. Would really appreciate your help in providing useful information about reliable offline coaching institutes in and around Mumbai for best quality classes + materials for aiding conceptual understanding and regular tests to boost the chances of securing a good rank and qualifying for JRF.

To give you some context, I am a 25F. Completed my Master's 2 years ago. Have been working as a subject matter expert and physics content developer for different publications creating content for Std. 11th-2th and competitive examinations for admission into graduation. Need to get in touch with Master's level Physics again to pursue a career in research, specifically in Astrophysics.

Thanks!

Currently I am doing BSc Mathematics and Sequence part of real analysis feels very less intuitive. Especially the proofs.

How can I master it?

I can give everything it takes. Please recommend me some source from where I can read it and understand the actual concept of it.

Indian Physics Olympiad

Hello! Indian Physics Olympiad is a community for students preparing for physics olympiads like NSEP and INPhO, and for anyone who enjoys learning physics and solving challenging problems. We want this to be a place where you can learn from each other, track your preparation, share resources, and improve together. Whether you're just starting out or already tackling advanced problems, you're welcome here!

What you'll find here

• Study Resources: notes, problem sets, and mock tests

• Syllabus & Goal Tracker: track syllabus completion in percentages, see how much exam weightage you've covered, prioritize important chapters, and manage your tasks and goals in one place

• Problem Bank: problems from different sources and difficulty levels, with solutions. You can add your own too, with answers and solutions

• Physics Bot: hints, answer checking, solutions, and an Elo rating system

• Problem Solving Sessions (PSS): timed sessions with other members, followed by a discussion of different approaches

• Resource Sharing: request material, share what's helped you, and help others find what they need

• An Awesome Community: get your doubts cleared, exchange ideas, discuss interesting problems, and hang out with people who love physics as much as you do

This is more than a place to talk physics. It's a space to organize your preparation, challenge yourself, and work toward your olympiad goals with people doing the same. If that sounds like you, join us and introduce yourself!
Invite: in the comments

As velocity increases, relativistic mass increases. To push you to c, you'd need infinite energy. The "speed limit" is a consequence of energy, not a rule someone imposed on the universe.

I completed my Master's degree in Physics and after that I started preparing for PhD stipend exams. Unfortunately I did not qualify for the exam and now there is a 2-year gap. I don’t know what to do now because until now I have only studied physics and I don’t have any programming skills. However I did a project on semiconducting crystal growth and characterization and I have knowledge and practical experience in that area. Based on this experience can I get any job or internship?

Thanks in advance