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*Image* ans given is 9 but i think its 8 .. what do u all say ?? ...

What orbital has only positive values of wave function at all distances from the nucleus? 1s 2s 2p 3d ...

*Image* HOW TO GET THE ACCELERATION OF WEDGE "M"?? ASSUME ALL SURFACES FRICTIONLESS ...

Find the equation of a str line equally inclined to the axes and equidistant from points (1,-2) and (3,4) ...

The mass to charge ratio for a cation is 1.5 X 10-8 kg/C.What is the mass of this atom? ...

1) limx→0 x2/sinx.tanx 2) limx→0[ x2/sinx.tanx ] 3) limx→0{ x2/sinx.tanx } 4)Find a,b i) limx→∞( x2+1/x+1 -ax-b)=0 ii) limx→∞( x2-x+1 -ax-b)≥0 ...

sum of the series \frac{1.2}{3!}+\frac{2.2^2}{4!}+\frac{3.2^3}{5!}+............\infty ...

Find the intervals of monotonicity of 1) sin\frac{\pi }{x} 2) (log_{3}x)^{2} + log_{3}x ...

let Zr,r=1,2,3.....n are n distinct roots of eq ^{n}C_{1}x+^{n}C_{2}x^{2}+^{n}C_{3}x^{3}+.......^{n}C_{n}x^{n}=0 in argand plane.If der exist exactly one Zr, rε{1,2....n} such that arg\left(\frac{Z_{r}-(-1+\sqrt{2}i}{(-1)-(- ...

A d-orbital can accomodate maximum 10 electrons only(True/False) My book says its false but i think it should be true Whats your take?? ...

The radii of maximum probability for 3s,3p and 3d electrons follow what order?? ...

let teh 3 sides of a triangle be integers l,m,n respect...satisfying l>m>n and \left\{\frac{3^{l}}{10^{4}} \right\}= \left\{\frac{3^{m}}{10^{4}} \right\}= \left\{\frac{3^{n}}{10^{4}} \right\} wer {x} is fractional part ...

If a1, a2, a3, a4,..........., a100 are the 100 roots of unity then find the value of \sum_{1\leq i \leq j \leq 100}^{}{} (aiaj)5 . ...

find the least positive integer m such that 22000 divides 2003m-1 ...

*Image* a parralle of beam of light falls on the quater of the cirlce of radius R as shown n the figure.RI of the quater of the cilcle is 3 nd of the surrouding medium is 1 . maximum value of OP as show in the figure so that ...

*Image* please explain the consequtive steps.... ...

find the product \frac{(1^4 +\frac{1}{4})(3^4 +\frac{1}{4})(5^4 +\frac{1}{4}).......(49^4 +\frac{1}{4})}{(2^4 +\frac{1}{4})(4^4 +\frac{1}{4})(6^4 +\frac{1}{4}).......(50^4 +\frac{1}{4})} ...

the mean lives of a radioactive substance are 1620yrs for alpha emission and 405yrs for beta emission respectively. find out the time during which three-fourth of the sample will decay if it is decaying both by alpha emission ...

A magnetic dipole with moment \vec{\mu } rotates abt its axis whose Moment of Inertia is given as I, with a const. angular velocity \vec{\omega } . A const. magnetic field \vec{B_0 } is siwtched on at t=0. Magnetic field vect ...

Ques 1) *Image* Ques 2) Following synthesis is effective when CH3CO C l + R2 Cd → RCOCH3 + R Cd C l R is of the type :- (a) (CH3)2 CH - (b) (CH3)3C CH2- (c) (C6H5)2 CH- (d) All of these ...

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Q) *Image* ...

compound (A) with formula C10H16 having two cyclopropane rings react with 3 moles of H2 in presence of Ni at 120C.It gives same product (B) on oxidative as well as reductive ozonylisis,A and B are both non resolvable. 1)Ident ...

A disc of mass m ,radius R is shown rolling on horz surface(having sufficient friction). Variation of electric fields with direction exist along its path as shown in figure *Image* charge on disc=Q 1)Find velocity of disc aft ...

i was trying to practise maths but got 1 thing either the buks were 2 easy or it were 2 hard taking the case of trignometry and algebra i used sl loni and hall and knight but found there level easy when i saw arihant ofund it ...

in a gamma decay process, the internal energy of a nucleus of mass M decreases, a gamma photon of energy E and linear momentum E/c is emitted and the nucleus recoils Find the decrease in internal energy ...

A nucleus moving wid a vel. v emits @(alpha) particle .Let the velocities of the @ particle nd the remaining nucleus be v1 nd v2 nd their massess be m1 nd m2 .... (A)v,v1 nd v2 must be parallell to each other... (B)none of th ...

multiple choice... Q..A car of mass M is moving on a horizontal circular path of radius r.At an instant its speed is v & is increasing at the rate a............. (a)the acceleration of the car is towrds d centre of the path.. ...

n to the power p -n;divisible by p. p is a prime number. prove it ...

Let P(x)=x^5+ax^4+bx^3+cx^2+dx+e . If the graph of y = P(x) cuts the x-axis at five distinct points and P(0)=0, then which of the coefficients cannot be zero? ...