✔--Physics P2: Post your doubts here --✔

[elbeyon]

I created this thread especially for the preparation of Physics Paper 2 for this Oct_Nov season. So anyone having any sort of problem in Paper 2 of Physics please do post it here. I or someone else will surely help you out. So let's get started.

 

[Varuna0911]

can this thread be for certain physics p34 practical paper too?

 

[Kandinsky]

Hi) to what number of significant figures should we give answers?
For example, if I get 11.25, the answer in marking scheme - 11.3, is it OK?
and do you write solutions in details?
Thanks =)

 

[raamish]

to calculate uncertainty do we do this: least count/ original value multiply by 100 or do we divide the least count?

 

[hussamh10]

to calculate uncertainty do we do this: least count/ original value multiply by 100 or do we divide the least count?

This is percentage uncertainithy u are calculatin for Uncertanity we use
Uncertainity in value=Value x Absolute error

 

[hussamh10]

Hey guys I have not staarted past papers i have done it before In may june session and scored A c if i start past papers from tmmorow will i be able to score an A?

 

[elbeyon]

Hi) to what number of significant figures should we give answers?
For example, if I get 11.25, the answer in marking scheme - 11.3, is it OK?
and do you write solutions in details?
Thanks =)

You have to write the answers in correct figures according to the Marking Schemes otherwise you will lose the accuracy marks. For the s.f look at the d.f part in the former CIE endorsed Physics book. I guess s.f part is mentioned over there clearly.

 

[bamteck]

Hey guys I have not staarted past papers i have done it before In may june session and scored A c if i start past papers from tmmorow will i be able to score an A?

Have you worked all the past papers before ?

 

[hussamh10]

Have you worked all the past papers before ?

yeah done it all but 2months before i got a B in p2 component wise

 

[bamteck]

yeah done it all but 2months before i got a B in p2 component wise

Do it again ! You have time..

 

[hussamh10]

Do it again ! You have time..

yeah u are right

 

[hussamh10]

http://olevel.sourceforge.net/papers/9702/9702_s12_ms_22.pdf
Q1 second part if u all add up the % error then the answer is 8.5 why the markscheme states 8.6?????

 

[hussamh10]

http://olevel.sourceforge.net/papers/9702/9702_s12_ms_22.pdf Q1 part 2 when we add up % error it come 8.5 why it is 8.6 wriiten in ms and als in Q2 when we caculate the speed it come 12.986 why it is written 12.99 and then also used in the next part as 12.99 .12.99 is 3s.f?

 

[Kandinsky]

You have to write the answers in correct figures according to the Marking Schemes otherwise you will lose the accuracy marks. For the s.f look at the d.f part in the former CIE endorsed Physics book. I guess s.f part is mentioned over there clearly.

So, even if I have a more accurate answer, I can still lose accuracy marks?
Concerning the book, if it is possible, could you please share somehow these rules regarding s.f. ?
Thanks)

 

[Mr Me]

Can anyone please explain me the question no. 5 b) & 7 C) (i) and (ii).
Q.P: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_21.pdf
M.S: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_ms_21.pdf

Please . Thanks in advance.

 

[Varuna0911]

can someone help me with the graph 1(b) and the rest of question 1 please

 

[aniroula]

Can anyone please explain me the question no. 5 b) & 7 C) (i) and (ii).
Q.P: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_qp_21.pdf
M.S: http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s11_ms_21.pdf

Please . Thanks in advance.

7 c I maxima is comstructive interference and ii is destructive intereference..

 

[aniroula]

can someone help me with the graph 1(b) and the rest of question 1 please

Their is no graph in qn 1.. It is in two,,,

 

[Varuna0911]

Their is no graph in qn 1.. It is in two,,,

help me with the graph anyway

 

[aniroula]

Ok,, but I am also not dat kinda expert in graphs,,,