Debrief - Physics (H1 8866/02) (H2 9745/3)
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... lost 12 marks, period. -
It semed like similar standard to some of the schools prelim papers. Totally unexpected.
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To me ... I think the calculation seemed to be fine, but the others, well ...
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u can post any questions that u remember
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i took H1 paper today! comparing other sch prelim and mine hor.. A lvl one is much more harder and totally unexpected questions came out! my teacher say those questions were challenging ones, i felt that the paper got so many explain and describe questions.. zzz
how about u guys, how u thought of the H1 Physics paper if u took it? -
Post the questions here is ya remember!
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topics tested...
1. momentum (kaoz... see the word "nuclei" i thought nuclear physics)
2. e-field
3. DC circuit
4. work energy power
5. motion in circle, g-field
6. thermal physics (this one a lot of ppl diff answers)
7. quantum physics (i never study this one
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screw up my gravity qn..
and can some1 tell me?
the e field qn.
got 1 qn 3 marks. ans only 1 line of working? -
e=v/d?Originally posted by club18:screw up my gravity qn..
and can some1 tell me?
the e field qn.
got 1 qn 3 marks. ans only 1 line of working?
a giveaway i suppose
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h1 is AO level? or A level?
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aoOriginally posted by HyuugaNeji:h1 is AO level? or A level? -
post questions
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waiting for school to put it upOriginally posted by AMEN567889:post questions
but ques 4 most qian bian
what energy changes are present in a radioactive decay [4] -
Q4. Discuss any energy changes that take place.
(a) A mass suspended in a Spring, oscillating vertically.
(b) A radioactive nucleus undergoing decay.
(a) is okay. (b) I can only think of mass defect and binding energy. No idea why 4 marks ?
Seriously I think this year is like a 'guinea pig' year where they test out new syllabus. Hope the other papers turn out well though.
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for mass oscillating on spring, have to talk abt elastic potential energy of spring, kinetic energy and gravitational potential energy of the mass.Originally posted by RaaRaa:Q4. Discuss any energy changes that take place.
(a) A mass suspended in a Spring, oscillating vertically.
(b) A radioactive nucleus undergoing decay.
(a) is okay. (b) I can only think of mass defect and binding energy. No idea why 4 marks ?
Seriously I think this year is like a 'guinea pig' year where they test out new syllabus. Hope the other papers turn out well though.
for the radioactive decay i m not sure. i talked abt mass lost as energy, loss in total binding energy, kinetic energies of daughter nuclei and alpha/beta particle as well as some energy in the form of a gamma ray photon. -
Screwed up Qn 4 b)... can anyone put up ans for Qn 3 and Qn 7?
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Q3
minimum resistance = 3 ohm
the rest shouldnt be a prob (forgot my answers) -
your work done should be equals to your increase in internal energy, not zero (since isochoric processes where W=0 only happens for a fixed mass of gas).
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The one with the steepest gradient right ... the 3.3 V and 1.10A one?Originally posted by striderz_o405:Q3
minimum resistance = 3 ohm
the rest shouldnt be a prob (forgot my answers)
If so, huat ar
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yeah that oneOriginally posted by Yaimster:The one with the steepest gradient right ... the 3.3 V and 1.10A one?
If so, huat ar
anyway go study for GP la
i already lost 4 marks at least for thermal because of carelessness =x
pV/RT i go put RT/PV -
Am I one of the rare few who did question 7? Someone suggest model answer to the 6 mark question please, thanks
The one on photoelectric effect and how it accounts for the particulate nature of light. -
I didn't do the question but I know the answer that should be written
1) Using the wave theory, there should be a time lag for the transmission of energy from light to photoelectrons. However, photoelectric experiments show no detectable time lag in transmission of energy, hence the incoming source of energy is not a wave and should be a particle.
2) The energy of photoelectrons emitted should be dependent on intensity using wave theory. However, stopping potential is independent of wave intensity and depends on frequency instead.
3) Using wave theory, photoelectric emission should occur for all frequencies. However, photoelectric emission only occurs above the treshold frequency, hence wave theory does not work here. -
bloody shit all the qn like so weird one...phy liddat gp oso liddat...kaohz...reali new syllabus new format sia
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Skali Maths also like thatOriginally posted by darkhour:bloody shit all the qn like so weird one...phy liddat gp oso liddat...kaohz...reali new syllabus new format sia. -
Wah if maths come out something like that, I stand up and clap and leave examination hall.