When diffraction grating physics questions have a trick

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OCR Modelling Physics 2020 Multiple Choice Question on diffraction gratings. Most people did not get this question, right. Let's have a look! : )
You can find the question paper on the OCR website:
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Комментарии
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I got 10, that sneaky 11th, hopefully this comes up on the exam now :)

hrishiv
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a multiple choice question like this was in my edexcel 2022 mock! i didnt get why that was the answer but now i do thanks!

thebarch
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this came up in my CIE paper today! would've probably fallen for that if it weren't for this video 👏👏

captain
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i saw this video an hour before my paper 2 exam and it came up thank you

alex
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for teta = 90 there will be 5 beights but is the 5th bright actually observable since it will be parallel to the slit?

joshuagodfrey
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Hi sir,
what if for e.g we get a value of 5.8 for n, will it still be n=5 or do we round up to 6?
Thank you

zanexlmao
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why does the wavelength become 640x10-9?

ZarahAmil
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Not a very hard qns tho, try singapore physics questions

thuoo