CCEA AS 2 Physics - Waves, Photons and Medical Physics - 28th June 2016

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brokenhyperlink
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#1
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#1
A discussion board for the last AS physics paper this year in 35 days time.
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brokenhyperlink
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What's everyone's thoughts on today?
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jackpcraig
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#3
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(Original post by brokenhyperlink)
What's everyone's thoughts on today?
Very happy with the paper, I found it alot nicer than AS1. Except a question or two but overall I am pleased.
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brokenhyperlink
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I think it was a nice paper but I ran out of time. I didn't like the drawing superposition question you had to do and some weird definitions that you had to write/i couldn't remember. I was so happy the big marker was lenses and not some big ugly one about wave particle duality or a lot more on medical physics.
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jackpcraig
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(Original post by brokenhyperlink)
I think it was a nice paper but I ran out of time. I didn't like the drawing superposition question you had to do and some weird definitions that you had to write/i couldn't remember. I was so happy the big marker was lenses and not some big ugly one about wave particle duality or a lot more on medical physics.
That wavelength one was a bit weird in the double slit experiment question which you had to calculate from the path difference.
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brokenhyperlink
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(Original post by jackpcraig)
That wavelength one was a bit weird in the double slit experiment question which you had to calculate from the path difference.
I was able to get them no problem. 3rd dark fringe has a path difference of 2.5(lamda) which equalled what 1.96 something? So (lamda) equals that number divided by 2.5 ... or thats how i done it atleast
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FoneyBaloney14
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Did anyone get a phase difference of 60 for question 2/3 for those 2 waves on the graph? And does anyone have a copy of the paper?

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jackpcraig
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(Original post by brokenhyperlink)
I was able to get them no problem. 3rd dark fringe has a path difference of 2.5(lamda) which equalled what 1.96 something? So (lamda) equals that number divided by 2.5 ... or thats how i done it atleast
Yeah I divided the path difference we got by 2.5.
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jackpcraig
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(Original post by FoneyBaloney14)
Did anyone get a phase difference of 60 for question 2/3 for those 2 waves on the graph? And does anyone have a copy of the paper?

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I got 72 degrees phase difference
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brokenhyperlink
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(Original post by FoneyBaloney14)
Did anyone get a phase difference of 60 for question 2/3 for those 2 waves on the graph? And does anyone have a copy of the paper?

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I got 72. Teachers don't get the paper until 24 hours after the exam
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jackpcraig
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Did you get the angle of incidence to be 46.3 degrees? For the prism. People in my class got mixed answers.
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DanBing
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(Original post by brokenhyperlink)
I got 72. Teachers don't get the paper until 24 hours after the exam
In our school the teachers often have the paper before the exam is even finished!

I thought the paper was more difficult than AS1, but it wasn't too bad. I had no clue what the electron arrangement in lasers was though.
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brokenhyperlink
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#13
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(Original post by jackpcraig)
Did you get the angle of incidence to be 46.3 degrees? For the prism. People in my class got mixed answers.
i cant remember, if someone has the actual question or remembers it i could get the answer
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jackpcraig
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#14
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(Original post by DanBing)
In our school the teachers often have the paper before the exam is even finished!

I thought the paper was more difficult than AS1, but it wasn't too bad. I had no clue what the electron arrangement in lasers was though.
Yeah I had no idea either, did anyone else have any idea? I just wrote about population inversion.
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