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OCR Physics A June 2009 paper Electrons waves and photons watch

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    Hey guys. To anyone who did the June 2009 past paper, did you guys understand the markscheme for question 1c to 1d? I really dont understand what it means by '6V supply with potential divider 'input' across it and lamp across pd 'output' ' means for 1ci, and i dont get what it means by a non zero intercept for 1cii- my graph started from zero. and i dont understand 1d at all- i got the wrong answers but have no idea how to work out the right answers. Could anyone try and explain these to me? Thanks for the help in advance guys !

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