Recently Active Questions

*Image* find the Eq. capacitance between A and B?????????? ...

a capacitor of capaxitance c carrying chargeQ is connected to an emf source of emf E.finally the charge on capacitance would be???? ...

Q) If the nth term of a certain series,whose first three terms are 2,1 and -3 is of the form a+bn+c.2n ,where a,b,c are constants,then show that a,c,b are in AP.Also find the sum of first 'n' terms of the series ...

1. f(x)= sin-1 (sin x)...find its period.... 2. 2f(x2) + 3f(1/x2) = x2 -1......for all x belonging to R - {0} then f(x2) = ????? pls ans urgently required...!!!! ...

∫ (3cosx+2) dx/(sinx+2cosx+3) Please give me a solution to this problem..... And these too. ∫(tanx)^(1/6)dx ∫√sin^-1(x) dx it's integration of root under sin inverse x . ...

why greater s- character ,shorter the C-H bond ????????????? ...

Which solution is a stronger acid ?? HCl dissolved in water or HCl dissolved in benzene ?? Ans should be water no..because H+ can be more furnished there, ...

CHCl3 is polar but still insoluble in water. Why ? ...

These are a few doubts from H.C.verma 1)Can an object be in pure translation as well as in pure rotation? 2)A ball is whirled in a circle by attatching it to a fixed point with a string.Is there any angular rotation of the ba ...

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what is the value of [{tan 20 +1/2{cos 20}}] where {} stands for fractional part and [] for greatest integer part. ...

the current density across a cylindrical conductorof radius R varies ; j=j0 {1-r/R} ,where r is the distance frm the axis .thus the current density is maximum j0 at the axis r=0 and decreases linearly to zero at surface r=R c ...

H.C.Verma doubts 1) A particle having a charge of 2.0 X 10-4 C is placed directly below and at a separation of 10 cm from the bob of a simple pendulum at rest. The mass of the bob is 100g. What charge should the bob be given ...

Q. In real gases Cp-Cv is equal to, less than , or greater than R ? ...

*Image* plz post complete solution for it! ...

i am student of class x. pls discuss elaborately from the step "Now we know that thrust force exerted by chain=λ.v2" of the problem. thanx ...

I know these are simple but it's not striking me... Q1- A car moving with constant acceleration covers the distance between two points 180m apart in 6 sec.its speed as it passes the second point is 45m/s.What is its accelerat ...

can someone give me ideas on how to perform the meterbridge experiment?? i have no idea and i am having practical exam tommorow plz help! ...

i'm a std.IX student. Will anyone plz xplain me the gas laws?? ...

i'm in std.IX. Can anyone plz suggest me some good books to study 4 physics, that can help me a lot in my ICSE boards? ...

A block of mass m is kept on a rough inclined plane of incl.θ with the horizontal.the whole system is kept in an elevator which is moving up with constant velocity v.Find the displacement of block in time t.Please explain. ...

i'm very weak at algebra. So can anyone plz say me if (x+1/x)=4 then (x-1/x)=? nd why?? ...

pls solve these sums for me in detail: 1) What is the period of the function |sin2x|+|cos8x| 2) If f(x)=ln( x2+e/x2+1 ),then find the range of f(x) 3) Let f:R→R be defined by f(x)=(ex-e-x)/2.Is f(x) invertible?.If so find i ...

If α and β are the zeroes of the quadratic polynomial f(x)=ax2+bx+c, then evaluate: a(α2/β+β2/α)+b(α/β+β3/α) I think there is some mistake in the problem. If yes, then pls tell me. Otherwise pls solve the problem fo ...

what would happen to battery whose terminal negative is earthed ?????????????????????????????????????????????????? ...

I browsed through the different sections and found that a lot of people have doubts regarding sums in H.C.Verma including me.So i urge the mentors to put up a separate section where we can put up problems from H.C.Verma? ...

Easy one I guess, but i want to see the method. The odd numbers are arranged as shown below: (1) (3,5) (7,9,11) (13,15,17,19)... Find the sum of terms in the nth bracket as a function of n. ...

*Image* find the Eq. capacitnce between extreme points P amd Q????? ...

why porous mass can easily be reduced to metallic state?????????? ...

If we take a magnet in the shape of a perfect cube.its one side will act as north pole and teh other side as south pole.Then what will be the polarities of other four sides? How will you decide which 3 adjacent sides of cube ...