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Edexcel A level Physics unit 5 multiple choice question -> Help? watch

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    Could someone explain the reasoning behind why the answer is "D" :erm: :hmmmm2: and not what I wrote. :puppyeyes:

    http://i.imgur.com/wnqtvtJ.png
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    (Original post by XxKingSniprxX)
    Could someone explain the reasoning behind why the answer is "D" :erm: :hmmmm2: and not what I wrote. :puppyeyes:

    http://i.imgur.com/wnqtvtJ.png
    I haven't covered U5 yet, but from GCSE: P \propto T^4, so the increase in temperature increases the rate of emission by a factor of \frac{330^4}{300^4}
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    (Original post by Zacken)
    I haven't covered U5 yet, but from GCSE: P \propto T^4, so the increase in temperature increases the rate of emission by a factor of \frac{330^4}{300^4}
    gcse?

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    anyway less than 1 i.e. 0.9 would be a reduction in the amount of radiation - which should have set some alarm bells off tbh.
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    (Original post by Joinedup)
    gcse?
    Crazy international boards. CIE.
 
 
 
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