Qualification > Revison Notes
CIE AS PHYSICS PAPER 1 (OCT/NOV)
kratos009:
Can someone expand on the infamous torque question, i can't seem to remember it... :D. Yeah i agree we should of had more time to do it. I didn't get enough time to check all my answers, only went through the first 10 >:(.
Tyserius:
--- Quote from: vince_24 on November 15, 2009, 05:06:30 am ---If ya did some past papers, there were some questions exactly the same from past papers like the locomotive power question and the alpha gold foil scattering question. (If only chemistry did this... )
I made some silly mistakes too such as the 'maxima' question, the answer was 15. I wrote 7. Forgot to double and add the 0th order ><
--- End quote ---
Erm, why do you double? Isn't it 7? 'Cause since the wave is diffracted, the coloured fringes are where you can find the superposition happening due to the interference. The dark fringes are with 0 amplitude? I'm not sure. I think it's 7 though... If not, yet another mistake =.=
vince_24:
--- Quote from: Tyserius on November 15, 2009, 06:36:26 am ---Erm, why do you double? Isn't it 7? 'Cause since the wave is diffracted, the coloured fringes are where you can find the superposition happening due to the interference. The dark fringes are with 0 amplitude? I'm not sure. I think it's 7 though... If not, yet another mistake =.=
--- End quote ---
n=7 is correct, but that is only one side. like
|__________0 th order
|
and then you have them spreading out on both sides as the question asked 'how many maxima can be observed' (I think)
So, there will be 7 on the top, 7 on the bottom and also the 0th order, so 15 in total.
Tyserius:
--- Quote from: vince_24 on November 15, 2009, 06:46:29 am ---n=7 is correct, but that is only one side. like
|__________0 th order
|
and then you have them spreading out on both sides as the question asked 'how many maxima can be observed' (I think)
So, there will be 7 on the top, 7 on the bottom and also the 0th order, so 15 in total.
--- End quote ---
Oh right.. sh*t I forgot I'm only counting one side ~_~ Crap. Oh well, 2 mistakes lol
falafail:
--- Quote from: Tyserius on November 15, 2009, 06:49:04 am ---Oh right.. sh*t I forgot I'm only counting one side ~_~ Crap. Oh well, 2 mistakes lol
--- End quote ---
Hey so my answer was right! ;D
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version