Physics Predictions/Thoughts (2 Viewers)

[svad]

dont they also say that nsw has the hardest year 12 exams???

I don't know about hardest, but i heard its the most competative state only due to our high population.

 

[wizzkids]

This was D btw, not C

No it was (C).
This is another poorly written examination question, that is bordering on being a "trick" question. This is appalling, it will disadvantage the best Physics students. And for goodness sake, why were the lines labelled W, X, Y and Z when they could just as easily (and more clearly) be labelled A, B C and D? This is deliberately complicating the question for no reason.
The introductory sentence does not specify under what circumstances the radioactivity was varying, it just says it is varying. Now radioactivity can vary for all kinds of reasons (for example by varying the distance between the source and the detector), and the bright Physics student's imagination goes wild at this point trying to figure out what the hell this question is about. ln the next sentence it asks students to identify the decay graph, but it doesn't say natural radioactive decay graph, it just says a decay graph. The confusion in the mind of the good Physics student has just got worse. Students then read that they must look for the smallest decay constant. It is only at this point that the "penny drops" and the real intent of the question is suddenly revealed, but in the most convoluted way possible. Students should not have to get to the last two words of the last sentence to figure out what is the purpose of the question. Then they have to go back and re-read the whole question to avoid the pit-fall that has been created. That is bordering on examination malpractice.

 

[coolcat6778]

No it was (C).
This is another poorly written examination question, that is bordering on being a "trick" question. This is appalling, it will disadvantage the best Physics students. And for goodness sake, why were the lines labelled W, X, Y and Z when they could just as easily (and more clearly) be labelled A, B C and D? This is deliberately complicating the question for no reason.
The introductory sentence does not specify under what circumstances the radioactivity was varying, it just says it is varying. Now radioactivity can vary for all kinds of reasons (for example by varying the distance between the source and the detector), and the bright Physics student's imagination goes wild at this point trying to figure out what the hell this question is about. ln the next sentence it asks students to identify the decay graph, but it doesn't say natural radioactive decay graph, it just says a decay graph. The confusion in the mind of the good Physics student has just got worse. Students then read that they must look for the smallest decay constant. It is only at this point that the "penny drops" and the real intent of the question is suddenly revealed, but in the most convoluted way possible. Students should not have to get to the last two words of the last sentence to figure out what is the purpose of the question. Then they have to go back and re-read the whole question to avoid the pit-fall that has been created. That is bordering on examination malpractice.

there's only so much u can do as an Independent exam author with no brain cells or creativity