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# OCR Physics A Exam - G482 Electrons, Waves, Photons [09/06/16]

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1. (Original post by NickLCFC)
Yeah I got something like 340, and I got 256Hz for the fundamental frequency (512/2)
Oh crap that 1 mark confused me i forgot what to do what did you get for the visible light letter i pit down C and i got C in the question which made you use hf= E1-E2
2. (Original post by Abb97)
Oh crap that 1 mark confused me i forgot what to do what did you get for the visible light letter i pit down C and i got C in the question which made you use hf= E1-E2
Defo got C, I put C D and E for visible light though, didn't have a clue xD
3. Oh and did everyone get 5 for the powers of ten question? I got 4 to start with but I think it depended on what wavelength of visible light you picked
4. (Original post by Abb97)
Oh crap that 1 mark confused me i forgot what to do what did you get for the visible light letter i pit down C and i got C in the question which made you use hf= E1-E2
(Original post by RBoss)
Defo got C, I put C D and E for visible light though, didn't have a clue xD
Can't remember what I got for that. All I can remember is that I used 500nm as being the wavelength for visible light and chose the letter closest to that value.
5. (Original post by RBoss)
Oh and did everyone get 5 for the powers of ten question? I got 4 to start with but I think it depended on what wavelength of visible light you picked
Yeah I got 5
6. (Original post by Abb97)
Resistance was 67/3 and V was given as 5 so do I=v/r and i was ~220mA therefore i selected 500mA anyone else do this?
This is exactly what I did
7. (Original post by RBoss)
Defo got C, I put C D and E for visible light though, didn't have a clue xD
I think it had something to do with A and B having long wavelengths so they must have been radio and microwaves and E/D being gamma and x rays as they had a short wavelength so Visible light is in between these therefore C
8. (Original post by RBoss)
Oh and did everyone get 5 for the powers of ten question? I got 4 to start with but I think it depended on what wavelength of visible light you picked
I got 5 as well
9. I put 6 ;_; don't know where 10-7 came from
10. (Original post by Abb97)
I think it had something to do with A and B having long wavelengths so they must have been radio and microwaves and E/D being gamma and x rays as they had a short wavelength so Visible light is in between these therefore C
Looking it up, the wavelength from visible light ranges from ~400nm to ~770nm, so this would cover the values for C, D and E
11. When is the unofficial mark scheme coming out?
12. (Original post by RBoss)
Oh and did everyone get 5 for the powers of ten question? I got 4 to start with but I think it depended on what wavelength of visible light you picked
Yes I got 5 too.
13. What do yo guys think the A grade boundary will be?
14. (Original post by Abb97)
When is the unofficial mark scheme coming out?
I saw post by teachercol saying it'll be done tomorrow/tomorrow evening
15. (Original post by Abb97)
I think it had something to do with A and B having long wavelengths so they must have been radio and microwaves and E/D being gamma and x rays as they had a short wavelength so Visible light is in between these therefore C
visible light has wavelength about 1 x 10^-7 m so I picked the closest to that one, since all of them were 10^-9 I picked the smallest out of them, but was it nano milometer rather than nano meters??
16. (Original post by SlippyDuck117)
What do yo guys think the A grade boundary will be?
Probably like 67-70
17. For the potential divider did anyone work out total resistance in the parallel arrangements and find current by I=V/R ?
18. fundamental was 256 pretty sure
19. (Original post by Reda2)
visible light has wavelength about 1 x 10^-7 m so I picked the closest to that one, since all of them were 10^-9 I picked the smallest out of them, but was it nano milometer rather than nano meters??
visible is in range of 450-700 x 10^-7 so it was d and e
20. I made a dumb mistake I forgot to put minus on the 10^-7 so my powers question is gone loool

personally think the paper was harder than last year ..feel like they just give some false sense of hope with the writing questions 😂😂
grade boundaries probably gonna be roughly like last year??

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