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the answer is (as given in the buk)

-q l (R² - 2x²)

E =K ------------------------

{(R² + x ² )} ^(5/2)

ofcourse both of them are not possible simultaneously,

well as A and C are above B, then the KE at B will always be greter than that at A or C, irrespective of which is greater, h_Aor h_C . thus the answer is a & d

How shud i study inorganic chemistry, i mean to say which chapters shud i emphasize more , n which one i shudnt bother about much !!! plsss reply soon...

Hey i want Inorganic Chemistry by JDLee.... pls if u cud get it for me!!!

no reply

yupp the question is corrct, n the answer given was inradius.... i myself cant understand this

but the answer wasnt this....

thanx for replying once again....

well i hav done two yr coachin along 11-12th frm fiitjee, nd rite now m preparing my own. jst hav got enrolled for ICP batches at fiitjee, whr i can get my doubts cleared, but i hav to do on my own only.... i hav done the whole syllabus once this yr, but i feel myself too week in waves, n then EMI, these two chapters are like that, i end up with doing the simplest problems only, n hav to leav even slightly tuff problems, which always get my marx lowered, even in mechanics also, i cant do those rotation problems. i want to knw 'bout any buk which cud get me some gud questions in chapters like waves, EMI and mechanics, provided they r relevant to current jee pattern...... i'll be gr8ful if u cud assist me!!!

also i want to knw how shud i devote my tym to studies, esp in these 3 months.... cuz i dnt want to lose jee again.... i hav joined aits, for getting my speed+accuracy increased, but the percentiles thr are also not too gud always between 92 and 93..... n sumtyms i feel too depress n really dnt feel like studying nemore.... u always say "keep it cool", but thats sumthing which i cant keep at all...... jst tell me some way out to all this !!! plsss

I'll be too gr8ful.....

Thanx once again for replying.....

u jst draw the graphs of the equation n u'll get it...

y=x-[x] implies the graph of y={x} (fractional part of x)

n the other is the graph of greatest integer function , plot them n u'll get it!!

Its too simple sonali, just rem'ber the basic formulas, n u'll get thru the questions , they r not too difficult. go thru all the examples of RCM, n then solve them on your own, n u'll find ur concepts much better!!!

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Life's tuff but m tuffer.....

But the answer is not this....

yupp....u r right malay....

PF is the median for the triangle PAB, n will defintely be divided by the centroid G in ratio 2:1.... but the point G will be the centre of the circle passing thru points A, B, P and O (the common centre of the concentric circles). as u said if PF is median, then PF produced will pass thru O, and GF= OF and also PG = GO = R and thus PG:GF = 2:1....

Hence Proved.....

the centroid of the triangle will be the mid-point of the line joining the common centre and P, and hence will lie on C1

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Manasi....

Life's tuff, but m tuffer.........

Two Uniformly Charged Rings are placed co-axially, at a seperation d, one with +Q and the other with -Q, then find the value of electric field at a point on the axis, as a function of x, where x is the ditsnce frm the ring charged +Q....

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Manasi....

Life's tuff, but m tuffer.........

Thanx Sir

.... I think I hav somewhat figured out, whr i lose.... wat i do evrytym is i jst go thru the books already i hav done..... n as most of the questions are done thr, i dnt solve it on paper.... i think thats the reason for my poor performance in physics..... I'll start jst now..... as u said with Irodov.... but tell me some other books too, which i can practice from.... keeping in mind the present JEE-pattern...... nd yes i hav already done HCVerma completely, so leaving that aside, sum other book, if u wud advise me!!

Once again Thanx....

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Manasi,

Life's Tuff, But m Tuffer......