OCR A 2021 AS Paper 1 - AS-level Physics Past Paper
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- Опубликовано: 5 авг 2024
- scienceshorts.net
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Paper: www.ocr.org.uk/Images/667483-...
Mark scheme: www.ocr.org.uk/Images/667487-...
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0:00 Multiple choise
19:04 Q21 - Momentum of trolley on lorry
22:05 Q22 - Uncertainties
25:00 Q23 - LED threshold voltage experiment
31:30 Q24 - Wavelengths emitted by stars
35:21 Q25 - Refraction & Young's double slit
39:38 Q26 - Moments & density -
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I have an AS exam fro breadth in 9 hours and this video is soo informative and also engaging to watch because of your sense of humour, your a lifesaver man ❤
im failin i k 100% im only watching this is coz hes funny
howd it go!!
@@aguy7863i failed 🤣🤣🤣🤣 got a U
you are so underrated . I have As re-sits and your vids allow me to go through practice papers so well. : ))
quick comment on question 23a - rather than turning the lights off, the best thing to do would be to put an ammeter in series with your circuit, and when the reading on the ammeter becomes more than zero then read of the voltmeter. This is your striking voltage! Hope this helps someone :D
whatd you get in ur physics AS
thank you for this video ❤
Much love thank you
thanks for the video❤, hope you enjoyed that ice cream
would you be making a video for the 2022 as paper?
35:13 hf = n * (hc/lambda)
I'm supriesed nobody mentioned the referance at 39:11 to 'hitchhiker's guide to the galaxy'.
nahhh I love this guy man
Hi, thank you for this video. I don't mean to be an annoyance but I think you made a slight error in your calculation at question 12 (multiple choice), you put 0.0126, but rather it is 0.126 since Pi * 0.04 = 0.126 which ends up rounding to 0.13.
Thank you.
Yep - don't know where that extra 0 came from!
33:56 I dont understand why higher E means fewer photons. I get that higher E is inversely proportional to f but how is frequency related to number of photons? Sorry if its a silly question to ask
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Well my gradient for 21 c turning out to be 20 not 10 but you are just skipping it
dy/dx try and get your values to be quite accurate . on the mark scheme they allow answers from 9.5 to 10.5
ye