Pure Physics MCQ Aftermath
-
How was it for you all? I prepared for my Os one week before it started... so.. lol
It was okok for me.
-
Too easy, as expected.
My physics teacher told me she predicted the A1 to be 75 based on the difficult paper 2, but now, she raised to 80 marks. =(
1-5 : DBBCD
6-10 : BDAAD
11-15 : BBCBC
16-20 : ACDCD
21-25 : ABADB
26-30 : DBACD
31-35 : BBACA
36-40 : ABDAD
These are my answers... please tell me if my ans is different from you.. =(
28 is wrong, shud be B, kana tricked!!!!!!
-
I have 1 wrong for now confirm. The microwave being satelite tv qn.
The other qn i have doubts is the magnetic field magnitude. elev, are you sure about your ans for that qn?
-
scan that question out?
-
28 shld be B
40 shld be A
My qn is qn37
-
I dont have a scanner but i can describe the qn. It is a concept qn
Is the magnetic field in the middle(pt A) of a permanant magnet stronger/weaker than a point outside the magnet(pt B), near the pole.
Pt A to the pole is roughly equidistance as ptB to the pole.
-
Originally posted by davidche:
28 shld be D
40 shld be A
My qn is qn37
Erm, i think 28 is B
and for 40, cannot use turn ratio meh. furthermore, the qn also nv say it is an ideal transformer...
-
it is pre assumed. Thats what my teacher explicitly told me.
-
Originally posted by [e].Le-V:
Erm, i think 28 is B
and for 40, cannot use turn ratio meh. furthermore, the qn also nv say it is an ideal transformer...
for most questions, an ideal transformer is assumed. but tell me more about the q...
-
how bout 37?
many ppl say its A
-
the more magnetic flux line, the stronger the magnetic field
-
37 is A? thought it's B? and whats the answer for qn9? pole thing
-
lolololol. looks like abstract art. Which, doesnt depict the field inside the magnet.
-
see the black stuff? they represent field lines. know why you can't see the individual field lines? cause there is alot of field lines.
-
I think 37 is A, because the magnetic effect is strongest at the poles.
And for transformer, WTF i thought must state out one? I do past year qn also got say one, k nvm gone.
-
CANT BE CANT BE I DEMAND A SECOND OPINION!!
what i was thinking is that the magnetic attraction in the middle is very little.
-
google.... research..... whatever....
-
eagle, pls enlighten us with ur intelligence.
-
fact: each electric current have it's own magnetic field.
fact: the closer you are to the current, the stronger the field is.
fact: Y is much closer to the current.conclusion: B.
want to dispute any of the facts?
-
http://www.phys.lsu.edu/dept/opps/key_ideas_about_magnets.htm
9. A magnet is strongest at its poles.
A magnet’s greatest strength is found at its poles, and its strength diminishes rapidly moving away from the poles. At a point about midway between its two opposite poles, a bar magnet exhibits no magnetism at all, because the effects of the opposite poles cancel one another. The poles of a magnet are not necessarily of equal strength.
Actually I also cannot fully comprehend... Give me a while more to think about it
-
if the point is right at the pole, the pole is stronger. but it is not very near the pole, so it is clear cut.
-
Originally posted by [e].Le-V:
eagle, pls enlighten us with ur intelligence.
I can't see the graphic in office.
Can upload to say... your yahoo geocities account if you have one?
-
actually i think trick is even tho there is no magnetism, there is more magnetic field?
-
Originally posted by eagle:
I can't see the graphic in office.
Can upload to say... your yahoo geocities account if you have one?
i draw for you
X
|||||||||||| Y ||||||||||||||| ====> solenoid
Z
-
so it is a solenoid? Not a magnet?
