Recently Active Questions

H-like atom in an excited state(x) absorbs 2.7 ev photon to excite to higher excited state(y).It emits 6 photons of different energy from this state.Find the atomic number and the quantum number of excited state. ...

Identify the least stable anion: a)Li- b)Be- c)B- d)C- ...

int_0^{1.5} {[{x^2}]dx} , where [.] denotes the greatest integer function, equals ...

A particle is moving in aplane with a velocity given by V=V0i +(awcoswt)j where i and j are unit vectors alond X and Y axes resp.The trajectory of the particle if the particle starts from origin at t=0 will be.. A) y=asin(wx/ ...

Which of the following has maximum melting point? ...

The density of a gas at 1.5 atm is 1.52 g/litre. Calculate its r.m.s velocity. ...

Let a, b, c bc non-zero real numbers such that int_{,0}^{,3} {} (3,a{x^2} + 2,bx + c),,dx = int_{,1}^{,3} {} (3,a{x^2} + 2,bx + c),,dx, then ...

Which follows octet rule? ...

If coefficient of friction is 2/sqrt(3). What is the force of friction acting? ...

2. If chlorine gas is 70 moles percent dissociated at 2000 k and I am pressure to form atomic chlorine, calculate the density of the mixture of gas? ...

If a, b are the roots of the equation a{{x}^{2}}+bx+c=0 , then the equation with roots 1/a, 1/b will be ...

int {frac{{d heta }}{{sin heta ,.,{{cos }^3} heta }}}Â = ...

The spokes of a wheel are made of metal and their lengths are of one metre. On rotating the wheel about its own axis in a uniform magnetic field of 5 × 10–5 Tesla normal to the plane of wheel, a potential difference of 3.1 ...

A thin uniform elastic rod of natural length L,density ρ and Young's modulus Y is just completely immersed in vertical position in fluid of density 2ρ by applying a vertical downward force at its top end. The rod is in equi ...

A thin uniform elastic rod of natural length L,density ρ and Young's modulus Y is just completely immersed in vertical position in fluid of density 2ρ by applying a vertical downward force at its top end. The rod is in equi ...

A certain quarternary star system consists of three stars each of mass m,moving in same circular orbit about a stationary central star of mass M.The three identical stars orbit in same sense and are symmetrically located with ...

mathop {lim }limits_{x o 0} frac{{{x^2} - 2x}}{{2sin x}} equals ...

A gaseous mixture contains 4 molecules with a velocity of 6 cm {sec ^{ - 1}}, 5 molecules with a velocity of 2 cm and 10 molecules with a velocity of 3 cm what is the RMS velocity of the gas – ...

Correct option regarding a container 1 mol of a gas in 22.4 litre container at 273 K is ...

Electronegativity of C & O in carbon-monoxide suggests it to be polar. But in reality it is not so. Why? ...

If {( - 7 - 24i)^{1/2}} = x - iy, then {x^2} + {y^2} = ...

The major product obtained in the reaction *Image* ...

Consider the first ionization energies of the elements whose electronic configurations corresponds to the following.Which of these is the highest ? (i) [He]2s22p3 (ii) [He]2s22p4 (iii) [Ne]3s23p1 (iv)[Ar]3d104s1 ...

int {{a^x}da = } ...

∫log(x+1) 1/x dx. from 0 to 1. ...

A EQUILATERAL TRIANGLE IS DRAWN BY 120 CIRCLES. EVERY CIRCLES HAS 1 C.M. RADIUS. FIND THE AREA OF THE TRIANGLE. ...

1) What is Dielectric Constant? 2) How is solubility of a substance measured? 3) What is lattice energy? ...

A rectangular loop with a sliding connector of length l = 1.0 m is situated in a uniform magnetic field B = 2T perpendicular to the plane of loop. Resistance of connector is r = 2W. Two resistance of 6W and 3W are connected a ...

integration of x^2/(a+bx)^2. ...

∫(x2+3)/x6(1+x2)=? Please explain. ...