Do not discuss exams until 24 hours have passed. More information about the rules here.

Sign in to follow this  
Followers 0
Eid Jazairi

Physics paper 3 (options)

How was it? Which options did you guys choose and how did you do? Personally I got option B and E.. Astrophysics was a walk in the park besides the binary star question, option B on the other hand had me doubting myself the entire way, calculations just didn't seem right.. But then again there are so many numbers its so easy to mistype a small digit into the calculator that makes the whole thing wrong XD

Anyways! Share how you guys did!

Share this post


Link to post
Share on other sites

I am HL, did astrophysics and relativity.

 

Pretty decent, overall I'm happy with Physics this year, seemed pretty easy compared to past years. Hoping to get a 6

Share this post


Link to post
Share on other sites

I am HL as well and i did EM waves and particle physics, overall i think i did ok but there were a few questions that i didn't understand!

Share this post


Link to post
Share on other sites

I'm HL too and I did option E (Astrophysics) and option I (Medical Physics). I  :wub: option I (best out of any practice test I took from the past couple years; it had everything I liked!). Felt just okay on option E (didn't study it too much/at all...).

Share this post


Link to post
Share on other sites

Sl. I did A and B, I got maybe half the questions right. Physics really screwed me over, i'm lucky if i get a 3.

Share this post


Link to post
Share on other sites

I did the same options as you, author ! Option B and Option E, Standard level.

 

I have the exact same impression about the exam as you it seems...

Questions in Option B were weird and rather annoying. Option E was okay I guess. Calculations easy, the only hard part I would say was the binary stars maybe.

1 person likes this

Share this post


Link to post
Share on other sites

I did options E and F, Astrophysics and Communications respectfully. Astro was ok, the questions were straightforward enough, but not overly easy. Communications on the other hand....well, I'm not so sure what that was XD

Share this post


Link to post
Share on other sites

HL here. I did Relativity + Communications. Both options were surprisingly easy, just like paper2. Expecting a 7 here (I hope I don't jinx it though :D).

Share this post


Link to post
Share on other sites

HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well 

Share this post


Link to post
Share on other sites

HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well 

 

Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so.

Share this post


Link to post
Share on other sites

 

HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well 

 

Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so.

 

 

Yeah, but it is a classic "just learn the syllabus" question. Probably not even correct anymore - but you just have to state that particle-antiparticle production is only possible at a high temperature (actually calculated in part (a)), but annihilation is possible at any temperature. Since there was initially slightly more matter in the universe than antimatter, matter "won". I'm guessing it's the last part - why there actually was more matter from the beginning - that physicist are debating? That, we didn't have to explain. 

Share this post


Link to post
Share on other sites

 

 

HL tz2, i did the astro and particle options, and seemed to go well, wasn't anything in there of much difficulty, couldn't completely remember why there is more matter than anti matter in the universe for the very last question but should pick up 1 or 2 marks for what i wrote. but overall went well 

 

Wow really? did the paper ask you to explain why there is more matter than anti-matter in the universe? If that is the case, then the IB is really unfair; because physicists aren't even sure why. There are several valid hypotheses of course, but there isn't a consensus among physicists about why it is so.

 

 

Yeah, but it is a classic "just learn the syllabus" question. Probably not even correct anymore - but you just have to state that particle-antiparticle production is only possible at a high temperature (actually calculated in part (a)), but annihilation is possible at any temperature. Since there was initially slightly more matter in the universe than antimatter, matter "won". I'm guessing it's the last part - why there actually was more matter from the beginning - that physicist are debating? That, we didn't have to explain. 

 

 

I'm pretty much wrote this, i just didn't write about the photon collisions that could occur at high temperatures  which i believe will be one of the marking points for the 3 marks

Share this post


Link to post
Share on other sites

For Astrophysics (Option E) Does anyone remember the graph they drew for the eclipsing binary star's variation of apparent brightness with time? If so, please describe what the shape was like. 

 

For Relativity (Option H), The last part of the last question (frequency change from the rocket's acceleration or something) did you simply use the formula to calculate the frequency change and write it down as the final answer? 

Share this post


Link to post
Share on other sites

For Astrophysics (Option E) Does anyone remember the graph they drew for the eclipsing binary star's variation of apparent brightness with time? If so, please describe what the shape was like. 

 

For Relativity (Option H), The last part of the last question (frequency change from the rocket's acceleration or something) did you simply use the formula to calculate the frequency change and write it down as the final answer? 

 

eclipsing1.jpg

 

 

Not sure you can actually see that picture, but I think the link is embedded at least. I drew the one to the left.

Edited by Sofia.
2 people like this

Share this post


Link to post
Share on other sites

HL here. I did Option E (Astrophysics) and H (Relativity).

 

Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.

And then Option H WRECKED me.

 

Hoping for at least a 5 overall :L

Share this post


Link to post
Share on other sites

HL as well, EM waves and Relativity. Both were quite easy for me, only the simultaneity question in Relativity got me thinking a bit, but I actually enjoyed the challenge. :D 

Share this post


Link to post
Share on other sites

HL here. I did Option E (Astrophysics) and H (Relativity).

 

Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.

And then Option H WRECKED me.

 

Hoping for at least a 5 overall :L

Are you TZ1? Because I'm TZ2 and found relativity more straightforward than astro..

Share this post


Link to post
Share on other sites

 

HL here. I did Option E (Astrophysics) and H (Relativity).

 

Option E was very straightforward - I enjoyed the questions and was able to answer them fairly thoroughly.

And then Option H WRECKED me.

 

Hoping for at least a 5 overall :L

Are you TZ1? Because I'm TZ2 and found relativity more straightforward than astro..

 

Yes I am TZ1. I forgot to mention it D: 

I should have studied more for relativity but astro interests me more :D

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0