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In many books a shortcut trick for checking differnetiabiltiy of a fuction is given by first differentiate LHS and RhS and check if both the slope are coming same, provided the function is continous. However in many question ...
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I.184 A chain AB of length l is located in a smooth horizontal tube so that its fraction of length h hangs freeely and toches the surface of the table with End B. At a certain moment the end A of the chain is set free. With w ...
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Can anyone tell me whcih mechanism u need to know for jee in organic chem in aldehydes and ketones just the names would do enough . Thank you ...
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Consider a rod CD which is held horiznotally across a peg transversally .(something like a a st line abt a peg and free to rotate abt any pnt)bt point A(which is not the com) and D is the com . and DA=a Find the angle rotated ...
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Have i gone crazy or has the kvpy ones gone question A concave lens of focal length 20 cm is given. A point object is at 10 m toward sleft of it .Find its image. Official solution since the image is at 2f the image is also fo ...
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COnsider a normal pendulum. It is moving under gravity. It has a hollow bob. water leaks out of the bob at a constant rate so . How will T be affected the right answer is that time period will increase and then decreaseMy ans ...
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Um if i am not misinfomred by the over enthusiastic people around me isnt it almost finalsied that jee is being replaced by aptitude test... more infomration please. And if its true then i am surely for it . i beleive as i al ...
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A CHARGE q is istributed uniformly over a large plastic plate.The electric feidl at point P,which is near the centre is 10V/m.Now the plate is replaced bya copper one and all the conditions of the previous problem are exact. ...
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Combinatorics marathon Inspired from artofproblemsolving we are gonna start a combithread maybe some questions will go above iitjee but i would like everyone to participate Rules 1) u need to post solution to the question uns ...
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A simple combi problem which suppossedly has multiple answers ? Find the number of ways of arranging 5 distingushable balls into 3 distinguishable (differnet) boexes such that each contains at least one ball. My logic (it loo ...
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A simple hcv sum with so much vectors is eating my head.... the concept is right but maths Consider a hypothethical magnetic field in a region B=B0er where er is the radial vector. A circlular loop of raidus a carrying a curr ...
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Guys wanna ask u one thing IN delhi is there a difference betweeen fiitee kalu sarai(South delhi) and other fiitjeee cnetres in dlehi ...
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Find all prime numbers that satisfy simultaneously p+1=2x2 p2+1=2y2 I solved it by the most elementary method can u all do the same even to prophet Sir(its not a challenge but the simplest solution actually doesnt require num ...
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prove that every integer can be expressed in this form and also for a partical integer there exists unique values of a and b n=1/2(a+b-1)(a+b-2) +a my sol i solved it involes something related to consecutive numbers and remai ...
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guys the reason why we left goiit was that there was no one intrested in solving a sum... now i see to some extent the same with targetiit.... means the moderate sums okk respns is good but for any top sup over the edge sum n ...
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looks like i am a genius in finding errors two silts are sep by 0.32mm .A beam of 500nm strinkes the solts producing an interference pattern . Determine the interference pattern between angular range -30egreees<0<30degr ...
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2 metal spheres of radii a and b are connected by a thin conducting spheres.There sep is very arge compared to there dimensions. Find the equivalent capacitance of the system. Since they are connected by a wire so the two sph ...
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Came back from IIt -guwhati for there annual tech fest techniche participated in Technotholon. Technotholon an annual school level compition testing the participants ability 2 thnk out of the box opver 2 lakh participants and ...
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the last post i posted was wrong due to my superb english on net n my failure to reply due to my xams so now whenever we calculate magnetic field due to a solenoid or a wire from amperes law or the same by gaus law for differ ...
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actually its not a question it something hat i hv thought over for a long time..... we generally assume in guasss law that electric field is symmetric like a pnt charge that can be easily proved now lets try to find the elect ...
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A solid body X of heat capciity C cools cc to newtons law of cooling. the atmospheric temp 300k.At time t=0 its temp is 400k it and at time t1its temp is 350K At this time t1the body X is connected to a large body Y at atmosp ...
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prove that bc(b+c)+ca(c+a)ab(a+b)<=2(a3+b3+c3) there r many sol to this sum but 1 ol just takes 2 steps lets see who get it ...
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hey fr9ds long time i posted any question so here is 1 lets take a rod rotating abt a hinge so my question is around which pnt is the rod rotating abt its hinge or abt the com it can also be said to be rotating abt the com as ...
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according to descartes theory of equation f(x) cant hv more posititve than changes in the expression does it also include 0 as the root n in the iit protion is the question just till quadractic equations or theory of equation ...
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there s this sum from irodov in 1.184 there is a chain witha length l-h inside a the tube or table and the res part is touching the floor kkk find the vel of the last bit of the chain as it falls down my doubt is not how to i ...
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question if the ring like mass m1 comes down a distance h what is the ratio of v1/v2 my method i solved this problem mainly on intitution like i drew a erpendicular and the length comes out to be h cos@ now i want to know the ...
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if p is a prime no satisfying n<p<2n show that 2n C is divsible be p............... n ...
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A table with smooth horizontal surface is turning at an angular speed w abt its axis a groove is made on the surface along a radius and a particle is gently placed inside the groove at a distance a from the centre Find the sp ...
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i was solving irodov kinematics and found that even after reading theory carefully there r some minue concepts that i tend to forget like v=wr where v is the speed of the object and i get aware of my misconcetion while solvin ...
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its a basic question from kinematics which has cinfused me a particle completes half a circle of radius 160cm in the time interval 10s. Calculate the following quantites averaged over the whole time interval. the mean veloict ...
