Recently Active Questions

A vehicle approaches a stationary observer from a distance. Which of the following graphs describes the frequency heard by a stationary observer? *Image* ...

In a photoelectric effect setup , a point source of light of power 3.2*10^-2 W emits mono energetic photons of energy 5.0ev.The source is located at a distance of .8m from the center of a stationary metallic sphere of work fu ...

NAME THEM AS NUCLEOPHIL N ELECTROPHILE CH3COO- SIF4 HCL ...

consider those functions f:N→N which satisfy the relation f(m+n)≥f(m)+f(f(n)) -1 for all natural numbers m,n. FIND ALL POSSIBLE VALUES OF f(2007) ...

∫ tanx ===[7][7][7] plz help meee.......... ...

*Image* ...

*Image* ...

*Image* ...

find all functions f:Q→R such that for all x,y ξ Q f(xy)=f(x)f(y)-f(x+y)+1 x,y ξ Q means for all x,y belonging to Q. ...

if the equation x4+ax3+bx2+cx+d=0 has four real positive roots then, a) ac >= 16d b) b2 >= 36d c) ac >= 16b d) b2 >= 36c ...

*Image* ...

On two smooth fixed parallel rod, a rod of mass m and kength l is placed. Ends of fixed rod is connected with battery and resistance and uniform magnetic field is present inside the page switch is closed at t=0. *Image* A. wh ...

The number of possible enatiomeric pairs that can be produced during monochlorination of 2-methyl butane ? ...

Consider epoxidation of 1,2 dimethylcyclohexene with peroxybenzoic acid.In what positions will the methyl groups be in the epoxide???? a)Axial,equitorial b)eqiutorial ,equitorial c)axial,axial ...

∫dx/1+4cot2x→limit of integarl =0 to pi/2 why not to convert in tan2x? ...

A tower subtends angle x° at a point A at its base plane. If the angle of depression of the foot of the tower at a point B at b height above A is y°, then the height of the tower is ans : B tan x° cot y° DIAGRAM SHALL B E ...

A conducting loop carrying a currrent I is placed in a uniform magnetic filed pointing in to the plane of the paper as shown. The loop will have a tendency to expand contract move towards positive x axis move towards negative ...

*Image* ...

*Image* ...

SORRY :( 4 DISCUSSIN goiit ques here.... but over ther none get solved and no Expert replies!!! QUE 1 Lattice (III): A atoms and B atoms crystallises as: A atoms occupying the corners whereas B atoms are occupying all the edg ...

find the solubility of PbSO4 ( K = 1.1 * 10-8 ) in 0.1 M aqueous solution of KNO3 help needed badly . thanks guys. ...

may be the dumbest question one can give in arithmetic progresions Let a,b,c,d be four distinct positive integers in arithmetic progression. Prove that abcd is not a perfect square. ...

*Image* ...

a beam of light incident vertically on a glass hemisphere of radius R and refractive index √2 lying with its plane side on a table. the axis of beam concides with the verticle axis passing through the centre of base of the ...

A solid cylinder of mass m is placed on a rough horizontal surface and a spring of stiffness k is connected to the point A at the same level as the centre O of the cylinder. OA and OB lie in a plane perpendicular to the axis ...

n balls are picked, one by one from four urns each containing n identical balls of green, red, white and blue colours. The number of ways, when no two consecutive pickings are from same urn and balls of all the colours are pi ...

y = x + 1/ x Draw the graph showing all teh convexities as well. ...

Centripetal acceleration of a particle of mass m moving in a circular of radius r is 4/r2 . What is the momentum of the particle? 4m/r 4m/√r 2m/√r 2m/r ans (c) ...

MULTIPLE CORRECT ANSWER TYPE Which of the following is true (mn!)^2 is divisible by a) (m!)^(m+1)*(n!)^(n+1) b) (m!)^n * (n!)^m c) (n!)^n * (m!)^m substituting values n gettin ans is pretty easi here i wud like 2 kno da meth ...

If f (x) is continuous and g (x) is discontinuous at x = a are then f (x) +/-- g (x) is discontinuous at x = a now is this always true or depends on the case??? i'll give an eg. f(x) = 1/x ; g(x) = 1/x ; h(x) = f(x) - g(x); t ...