How was Physics paper 52?

[mnotanerd]

you dont keep frequency constant. thats the factor on which the height of the ring depends.

i know i kept current constant..someone told me dat frequency was contant and i got confused.

 

[mnotanerd]

i

current, number of turns in coil and voltage

for question 2 y-intercept = -0.5

what about you?

got - 1.02

 

[rabos1]

so many? are you serious? :O

No, remember in the graph of x-axis they wrote x10^-3. I just took the values of 1/f. Didn't put x10^-3 with it, so?

 

[Aamer Faiyaz]

I got 8.3 ish and -1.04ish and didnt take the 10^-3 :s can someone please tell me what they got?

 

[miss.insomniac]

that's wat i mentioned before. its the ratio between y and x which makes a graph. we dont always get 'that much' as a gradient (whatever is got if the power taken is -3). BUT still, as quoted, wat they provided in the table was in one thousandth. so the confusion continues.

correct or not, the rests are going to be fine

 

[DumbIdiot]

i
got - 1.02

the weird thing for me was that the error in y-intercept was like +-2 which is greater than the actual value of y-intercept -0.5
but now that i think about it this is possible in certain circumstances but how was i supposed to write it down

-0.5+-2.0????? lol this looks ................................................

for those who got negative y-intercept, didnt you face a similar problem(error>than best value)?

 

[Aamer Faiyaz]

I got 1.04 +-1 :s the heck

 

[DumbIdiot]

I got 1.04 +-1 :s the heck

well thats a close one. the worst line is likely to be the same for all those who plotted the points accurately. only the best line will differ.

oops i also forgot to label the lines.damn it

 

[Dolly96]

I got -0.64 y intercept and uncertainty 2.19

 

[Dolly96]

And after considering 10^-3 the value of gradient got very large

 

[nabeelah]

the weird thing for me was that the error in y-intercept was like +-2 which is greater than the actual value of y-intercept -0.5
but now that i think about it this is possible in certain circumstances but how was i supposed to write it down

-0.5+-2.0????? lol this looks ................................................

for those who got negative y-intercept, didnt you face a similar problem(error>than best value)?

yeah got the uncertainty greater!!kinda weird
think it was wrong i've halved it because using the actual value; my %uncertainty in F was greater than 100%

 

[mnotanerd]

the weird thing for me was that the error in y-intercept was like +-2 which is greater than the actual value of y-intercept -0.5
but now that i think about it this is possible in certain circumstances but how was i supposed to write it down

-0.5+-2.0????? lol this looks ................................................

for those who got negative y-intercept, didnt you face a similar problem(error>than best value)?

haha same i got - 1.02 +- 1.1 lol ...but i think we should start preparing for paper 4 now

 

[Aamer Faiyaz]

What was the frequency for the 2nd last quextion? 256?

 

[Raissa Christabel]

I got -0.64 y intercept and uncertainty 2.19

i got y intercept of -0.6 and uncertainty of 2.02 .. close enough!

 

[Raissa Christabel]

What was the frequency for the 2nd last quextion? 256?

i got 252.. well.. i hope that it's within the range

 

[Raissa Christabel]

what is the percentage uncertainties? at the very last question?

 

[saima1995]

My percentage uncertanity came to about 10.6% not too sure if it really was correct or not

 

[Ujjwal Basnet]

the weird thing for me was that the error in y-intercept was like +-2 which is greater than the actual value of y-intercept -0.5
but now that i think about it this is possible in certain circumstances but how was i supposed to write it down

-0.5+-2.0????? lol this looks ................................................

for those who got negative y-intercept, didnt you face a similar problem(error>than best value)?

same here i got itercept -0.92 and and uncertainity -2.67 or smthng i think we did smthng wrong else how can uncertainity be greater than the actual vale?

 

[Ujjwal Basnet]

Not possible. They'll cut one or two marks.. they'll see our method for errors and all.

i hope that happens but see we hav got the gradient wrong and uncertainities wrong and that qstn was worth 2 marks so where do u expect them to give us a mark?and the same goes for intercept...but i hope what u r saying happens its good for me too

 

[Rajan12]

i got 252.. well.. i hope that it's within the range

i got 254... i hope answer is in range