guys, for the comment on safety, i put relatively safe experiment/ low risk experiment and i got the vernier caliper question wrong, i put C question 7 was actually nice, it was a delightful change but there was a comment on whether repeat readings are appropriate or not, i wrote they are unless lamp gets hot, is that right? also there was list additional apparatus, i wrote protractor and pins also Last question, the resistivity was 1.11 x 10^-6, but i wrote it only to 2 SF, is that fine?
2 SF should be fine; I predict that the mark scheme will have a range of accepted values for the resistivity, and if yours is in it, then you should get the marks.
The lamp getting hot is irrelevant in the experiment, because you're using it as a light source and measuring angles. If it was in an electrical circuit, then the lamp heating up would be relevant.
guys, for the comment on safety, i put relatively safe experiment/ low risk experiment and i got the vernier caliper question wrong, i put C question 7 was actually nice, it was a delightful change but there was a comment on whether repeat readings are appropriate or not, i wrote they are unless lamp gets hot, is that right? also there was list additional apparatus, i wrote protractor and pins also Last question, the resistivity was 1.11 x 10^-6, but i wrote it only to 2 SF, is that fine?
Repeat reading are necessary when it comes to angles. you should atleast repeat it three times for the same angle of incidence to get an average which makes your answer more reliable and accurate. I got 1.20x10^-6 for resistivity. for additional equipment I mentioned protracter and optical pins. And its a low risk experiment because its low voltage used
guys, for the comment on safety, i put relatively safe experiment/ low risk experiment and i got the vernier caliper question wrong, i put C question 7 was actually nice, it was a delightful change but there was a comment on whether repeat readings are appropriate or not, i wrote they are unless lamp gets hot, is that right? also there was list additional apparatus, i wrote protractor and pins also Last question, the resistivity was 1.11 x 10^-6, but i wrote it only to 2 SF, is that fine?
Your question 7 I wrote the same, and it should be fine. also the additional apparatus was only 1 needed so I wrote protractor. last question not sure if there is a range but here is the workout that was needed
First find the gradient, which I got 4.96 which rounded to 5, The resistivity should equal = Gradient x Cross Sectional Area Resistivity = 5 x (Pi[(given diameter)/2]^2) Resistivity in my calculation = 1.23x10^-6
I did component 12 too and I also thought it was quite hard. I hope they are lenient with the grade boundaries.
Yeah. Anyway remember that "special register" question where they asked you to talk about the fetch cycle? I described all the 4 registers(mar,mdr,cir and pc) and their function during the fetch cycle. What do you think the correct answer is? and also that DBMS question where they asked about the use of query processor, what did you write there?
guys, for the comment on safety, i put relatively safe experiment/ low risk experiment and i got the vernier caliper question wrong, i put C question 7 was actually nice, it was a delightful change but there was a comment on whether repeat readings are appropriate or not, i wrote they are unless lamp gets hot, is that right? also there was list additional apparatus, i wrote protractor and pins also Last question, the resistivity was 1.11 x 10^-6, but i wrote it only to 2 SF, is that fine?
Yeah i got the same answer for the resistivity. 2 significant figures is fine
My answer on comment on safety: Although the experiment has a low risk but there is a chance that the glass block can fall down and injure the student's toes.
i have one question wrong way that who you control current , if our answer is wrong does it effect the other marks and what xaminear thinkabout me, i am to much woried!
i have one question wrong way that who you control current , if our answer is wrong does it effect the other marks and what xaminear thinkabout me, i am to much woried!
don't worry examiners dont award marks like that and they dont cut if one easy question is wrong. There are many examiners that check our papers and the papers are checked under circulation of mixed examiners so there wont be any problem. One examiner wont check one whole paper, its like check one question then pass it on to another to check it.
Well thats gr8. In the last question for the assumption of resistivity i worte two points 1. Temperature may not be constant 2. Terminal velocity not reached So can any 1 of these be correct......there shouldnt be parallex error r8 coz they mentioned that our calculation is correct doesnt that mean there is no parallex error in our calculation????
Well thats gr8. In the last question for the assumption of resistivity i worte two points 1. Temperature may not be constant 2. Terminal velocity not reached So can any 1 of these be correct......there shouldnt be parallex error r8 coz they mentioned that our calculation is correct doesnt that mean there is no parallex error in our calculation????
Terminal velocity is absolutely wrong. Beaucse terminal velocity is not in any way related to resistivity