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

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
Reply 1
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: PT4P \propto T^4, so the increase in temperature increases the rate of emission by a factor of 33043004\frac{330^4}{300^4}
Original post by Zacken
I haven't covered U5 yet, but from GCSE: PT4P \propto T^4, so the increase in temperature increases the rate of emission by a factor of 33043004\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.
Reply 3
Original post by Joinedup
gcse?


Crazy international boards. CIE.

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