ATAR Notes: Forum
Archived Discussion => 2009 => End-of-year exams => Exam Discussion => Victoria => Physics => Topic started by: redmosez on November 13, 2009, 05:01:54 am
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So I think I might have stuffed up the question on the exam that asks you to calculate W.
I used W = hf "zero"
But instead of using the value of h calculated from the graph I used the accepted value (4.14x10^-15) and ended up with something like 1.3 eV
Do you guys think i'd lose the marks, seeing as it asks you to use the graph? is using f "zero" from the graph enough?
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yes
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yeah the h value from graph was h=5.0 x 10^-14.....from that Ew was 1.5eV. So they might take a mark off
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mmm, the question asked specifically using info from the graph
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So I think I might have stuffed up the question on the exam that asks you to calculate W.
I used W = hf "zero"
But instead of using the value of h calculated from the graph I used the accepted value (4.14x10^-15) and ended up with something like 1.3 eV
Do you guys think i'd lose the marks, seeing as it asks you to use the graph? is using f "zero" from the graph enough?
i did what was above but on the working space i also used the graph and estimated that the W is 1.5ev and used this to determine h and i put the answer to h and W NOT inside the BOX where you put the answer in but ON the TOP of the BOX and inside the box i did what redmosez did and put h=4.14E.14evs in the box and 1.3ev in the box....
do you think i could get the marks (3marks)