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1) starting with this one-work done dW=PextdV but in all the cases we take Pext=nRT/V in solving the problems,we integrate from there but Pext is not equal to nRT/V??? then why are we taking equal??? 2) internal energy- Does ...
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What will be ur easiest approach on this question... find x.. *Image* easy.. though interesting...!! ...
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*Image* For second, Options B,D are same. And those contain the answer I think For Third, Someone verify. I think it should be C ...
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*Image* For second, Options B,D are same. And those contain the answer I think For Third, Someone verify. I think it should be C ...
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*Image* For second, Options B,D are same. And those contain the answer I think For Third, Someone verify. I think it should be C ...
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Q.Find the minimum radius of a planet of density rho temperature T which can retain oxygen in it's atmosphere.The mass of oxygen is M and the acceleration due to gravity is g m/s^2. Ans-:sqrt[(9RT)/8*G*m*rho*pie] here i get t ...
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Let z and w be two complex numbers such that |z|=|w|=1 and |z+iw|=|z-iw|=2. then z= ...
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1. A block A of mass m is placed over a plank B of mass 2m. The friction between them is .5 while the ground surface is smooth. The upper block A is imparted a velocity V towards right. The acceleration of B relative to A wil ...
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A point object moves on a circular path such that distance covered by it is given by S=t^2/2 +2t meter(t in seconds) .ratio of magnitude of acceleration at t=2 and t=5s is 1:2 .then radius of circle is? Ans 3√51 Please expl ...
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in a hypothetical atom, potential energy beteen electron and proton at distance 'r' is given by ( -ke2/4r3 ) where k is constant . suppose bohr model is valid and n is principal quatum number , then total energy is proportion ...
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multi correct; in non uniform spherical shell of mass 'm' and radius R (here E is gravitational intensity) which of the following are wrong; (A) E = 0 (r<R) (B) ∫ E.dS = 0 on any closed surface inside the shell (C) E can ...
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multi correct; in non uniform spherical shell of mass 'm' and radius R (here E is gravitational intensity) which of the following are wrong; (A) E = 0 (r<R) (B) ∫ E.dS = 0 on any closed surface inside the shell (C) E can ...
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1)We know that geometrical isomers are exhibited by alkenes and not by alkanes.It is because of the fact that alkanes undergo rotation along the sigma bond.This ability is also responsible for the existence of conformers. But ...
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A uniform rod of length 27 m is rotating through one end through a fixed axis perpendicular to rod.ratio of angular and linear momentum? Options: 3,9,18,27 My answer is 9 but correct one is 18 which comes if we take MV=MWL/2 ...
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Guys having a problem to find the equation of the line of shortest distance between 2 skew lines. take for an example between ........ x+4/4 = y-2/-2 = z-3/0 and x-5/5 = y-3/3 = z/0 please show the working.......(ans- x/0 = y ...
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1. *Image* 2. Let Points P,Q correspond to the complex numbers a,b in the complex plane. If |a| = 4 and 4a2-2ab+b2 = 0 , then the area of the triangle OPQ, (O = Origin) is : ...
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for a liquid normal boiling point is 351 K statement: at 351 K and 2 atm pressure , change in gibbs energy ΔG is positive. true or false? and why ...
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A metal sphere of radius R is charged to a potential V . FIND THE ELECTROSTATIC ENERGY STORED IN THE ELECTRIC FIELD WITHIN A CONCENTRIC SPHERE OF RADIUS 2R? ANSWER GIVEN- 2Ï€Æ RV2 MY ANSWER-Ï€ÆRV2 :P ...
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multi correct A neutron collides head on with a stationary hydrogen atom in ground state.Which of the following are correct( take mass of neutron ≈ hydrogen) A) if kinetic energy of neutron is less than 13.6 eV , collision ...
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1. The no. of tangents to the curve y = cos(x+y) , |x| ≤ 2Π, that are parallel to the line x+2y=0 is ? 2. If 2008θ=Π, and 2 .\sum_{r=1}^{r=n} \sin(r\theta)\cos(r^2\theta) is an INTEGER , then find the least integral n ? ...
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1. ARRANGE IN INCREASING LATTICE ENERGY LiCO3 , Na2CO3 , K2CO3 2. COMPOUND WITH HIGH LATTICE ENERGY : LiF OR LiBr (reasons also plz) ...
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A metal sphere of radius R is charged to a potential V . FIND THE ELECTROSTATIC ENERGY STORED IN THE ELECTRIC FIELD WITHIN A CONCENTRIC SPHERE OF RADIUS 2R? ANSWER GIVEN- 2Ï€Æ RV2 MY ANSWER-Ï€ÆRV2 :P ...
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at 300K vapour pres. of pure benzene and pure tolune are 100mm and 30mm of Hg rep. also they form ideal soln.a soln. of benzene and tol. is prep. by mixin 3 mole of tolun in 2 moles of benz. at 300K. 1)at wht external pressur ...
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Intensity and exact wavelength of the lines in the spectrum of an element depends upon ? a) temperature b) Pressure c) Pressure of Electric Field,magnetic field and motion of source d) None e) All ...
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Intensity and exact wavelength of the lines in the spectrum of an element depends upon ? a) temperature b) Pressure c) Pressure of Electric Field,magnetic field and motion of source d) None e) All ...
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at 300K vapour pres. of pure benzene and pure tolune are 100mm and 30mm of Hg rep. also they form ideal soln.a soln. of benzene and tol. is prep. by mixin 3 mole of tolun in 2 moles of benz. at 300K. 1)at wht external pressur ...
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