Messages posted by manastalkinglive

@ all

I got 4206 rank in Bharti vidyapeeth.Can i expect CSE or IT?

1)The field normal to the plane of a wire of n turns and radius r which carries a current I is measured on the axis of the coil at a small distance h from the centre of the coil.This is smaller than the field at the centre by the fraction.

a) (3h^2)/(2r^2) b) (2h^2)/(3r^2) c) (3r^2)/(2h^2) d) (2r^2)/(3h^2)

2)The magnetic field inside a current carrying long wire of circular cross section varies as(r:distance from center)

a) r^0 b)r c)r^2 d)r^3

Well the answer given is 4q.Had the answer been 64q i wouldn't have asked this Q bcoz then it becomes so easy.

@above
I will keep in mind next time to ask one question in one post

Well actually the answer for Q1 is 4q.

1) 64 charged drops of capacity C and potential V are put together to form a bigger drop.If each small drop had a charge q then the charge on bigger drop will be:

a) q b)4q c)16q d)64q

2) 3 identical metallic uncharged spheres A,B and C of radius a are kept at the corners of an equilateral triangle of side d(d>>a).The fourth sphere (of radius a) which has a charge q touches A and is then removed to a position far away.B is earthed and then the earth connection is removed.C is then earthed.The charge on C is:

a) qa(2d-a)/(2d.2d) b) qa(2d-a)/(2d.d) c) -qa(d-a)/(2d.d) d) 2qa(d-a)/(2d.d)

3) A particle of mass m and charge q starts moving from rest along a straight line in an elec. field E=E`-ax where a is a +ve constant and x is the distance from starting point.Find the distance travelled by the particle till the moment it comes to instantaneous rest:

a)2E`/a b)E`/a c)E`q/m d)E`/q

4)One plate of a capacitor having charge Q and plate area A is pulled by a man keeping one plate at fix position.What force should be applied by the man such that plate moves with const. velocity

pls. help guys,it's a class 10th level problem and i feel irritated not being able to solve it.

Q: h(x) is a polynomial which when divided by x+1 leaves remainder 7 and when divided by x-1 leaves remainder -3.What would be the remainder if h(x) is divided by: ((x^2)-1) ?

Q: Numerical value of: cosec 20 - cot 40=

Ans is but pls. explain how

I have applied whitener over the 2 places where i had to sign on the AIEEE form and then done the signatures again over it.Can my form be rejected?

1) The approximate value of cube root of 127 is

a)377/75 b)376/75 c)374/75 d)373/75

2)The sum of intercepts of tangents to upon the co-ordinate axes is

a) 2a b) c)a d)

3)The length of normal at point t of curve x=a(t+sin t) , y=a(1-cos t) is

a) asin t b)2asin^3(t/2)sec(t/2) c)2asin(t/2)tan(t/2) d)2asin(t/2)

4)The no. of values of x where the function f(x)=cos(x)+cos() attains its maximum is

a)0 b)1 c)2 d)infinite

For Q1 ans-> n=3

pls. anybody answer Q1 & Q3

1)period of : sin(nx)/tan(x/n) is 6pi,n=

2)If f:R->S defined by f(x)=sinx-cosx+1is onto then interval of S is:

a)[-1,3] b)[1,1] c)[0,1] d)[0,-1]

3)If f: R->R and g: R->R be 2 fucns. and h(x)=2max( f(x)-g(x) , 0 ) then h(x) is:

1)period of : sin(nx)/tan(x/n) is 6pi,n=

2)If f:R->S defined by f(x)=sinx-cosx+1is onto then interval of S is:

a)[-1,3] b)[1,1] c)[0,1] d)[0,-1]

3)If f: R->R and g: R->R be 2 fucns. and h(x)=2max( f(x)-g(x) , 0 ) then h(x) is:

4)If f: is defined by f(x)= then inverse of f(x) :

a) b)(1/2)(1+) c)(1/2)(1-) d)not defined

5)A real valued funcn. f(x) satisfies f(x-y)=f(x)f(y)-f(a-x)f(a+y),where a is a constant and f(0)=1,f(2a-x)=

a) f(a)+f(a-x) b)f(-x) c)-f(x) d)f(x)

6)3f(x)-f(1/x)=log(x^4),then f(e^-x)=

a)1+x b)1/x c)x d)-x

7)f(x)= , f: R->R,then f(x) is

a)many one onto b)one one onto c)one one into d)many one into

8)if f(n)= and f(1)=1, then =

a)(3^m)-1 b)3^m c)3^(m-1) d)3^(m-1)

If y=f(x) is a function whose graph is symmetrical about x=1 and x=2. Then f(x)=

a)f(x+1) b)f(x+2) c)f(x+3)

Pg.196 Q.21,22,23

Pg.197 Q.28

This is not any resonance homework.I have some study material of Brilliant-Tutorials and a few other small coaching centres given to me by my friends who have taken admission in colleges this year.As i have no teacher to ask my problems i ask my problems in this community.

Straight lines problems

H.C.Verma -Newton laws of motion

Pg 80> Q-16,21

Pg 82> Q-36,37,38,39(ii)

Q1- If are the roots of the eqn., then the range of values of m for which is:

a) (-1,3) b) (1,3) c) d) None

Q2- If a,b,p,q are non zero real nos.,the two eqns. , and have:

a) no common root b) One common root if

c) two common roots if 3pq=2ab d) two common roots if 3qb=2ap

Q3- If coefficients of the eqn. ae real and roots of the eqn. are non-real complex and a+c<b then,

a)4a+c>2b b)4a+c<2b c)4a+c=2b d)none

Q4- If a,b are non-zero real nos. and the roots of then prove are the roots of

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