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the light ray wil travel in straight line and wil reflect the the wall and wil go down at an angle then wil again reflect the downward wall and move upwards and wil do the same to travel to the other side of of the fibre.
the core should be narrow to reduce energY loss as if the core is thicker the light ray has to travel more so enrgy wil be lost
well for finding displacement from the mean position in a simple harmonic motion.
we use the formula X= X0sinwt (this is used when no displacement took place at time, t = o ) means x=o at t=o.
where As
we use the formula X = Xocoswt (this is used when no displacement took place at time, t = o ) means x=Xo at t=o.
so both formulas are correct fr calculating displacement, the thing is that they r 2 b Used at diff. occasions.
sinwt will be used when the graph is starting frm origin( o, 0)
coswt will be used when the graph is starting frm maximum displacement ( 0, Xo) hope u gt it??
No, The reason it will lose energy does not depend upon travelling more distance... The reason is because of angle... Light ray, when it exceeds a certain degree of Angle from normal, is reflected.. The reflection is called Total Internal Reflection... if TIR doesnot occur, the light will be refracted and energy will be lost..the light ray wil travel in straight line and wil reflect the the wall and wil go down at an angle then wil again reflect the downward wall and move upwards and wil do the same to travel to the other side of of the fibre.
the core should be narrow to reduce energY loss as if the core is thicker the light ray has to travel more so enrgy wil be lost
I think this is about it, you won't need more accurate drawing just for 1 mark.
No, The reason it will lose energy does not depend upon travelling more distance... The reason is because of angle... Light ray, when it exceeds a certain degree of Angle from normal, is reflected.. The reflection is called Total Internal Reflection... if TIR doesnot occur, the light will be refracted and energy will be lost..
Don't try to discuss such stuff or ask such questions on the forums. First of all no one would really know the topics and if someone somehow knows and tells you, you both will get your paper cancelled probably.do you know topic of practicls?
Don't we always use V( nought ) when calculating the energy stored in a capacitorAssalamu alaikum,
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w06_qp_4.pdf
Pls solve Q.6 , part c(2 ) ;
Pls explain why it's V( nought ) used instead of Vr.m.s.?? Thanks
AoA,Q-Explain why a capacitor stores energy but not charge?
WS,AoA,
Where did you get this question brother?
CApacitor's main work is to store charge!
Since there are two parallel plates storing charge, the capacitor stores charge but does not stores net charge as it is cancelled out or balanced!
Yeah got it, thanks/JazakallahSince there are two parallel plates storing charge, the capacitor stores charge but does not stores net charge as it is cancelled out or balanced!
It is just like a body moving with constant speed, it experiences force but no resultant force, so as to that sometimes we say that it experiences no force!!!
Hope you got the point.
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