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If a,b,c are in AP ;b,c,a In GP then prove that 1/c , 1/a , 1/b are in ap ...

http://www.chacha.com/question/is-lead-hydroxide-amphoteric claims lead hydroxide to be amphoteric. So, what prevents it from reacting with the base ammonium hydroxide? Thanx in advance... ...

In a meter bridge experiment, the resistance to be measured is connected in the right gap and a known resistance in the left gap has a value of 50±0.2 Ω when the null point is judged to be at 60±0.2 cm. The student notes t ...

This is a great problem which you can probably approach in a number of different ways. All natural numbers are arranged as follows. 1 3 6 10 15 . 2 5 9 14 . . 4 8 13 . . . 7 12 . . . . 11 . . . . . and so on. Find the row and ...

In triangle ABC points L and M divide the sides AB and BC in the ratio 2:3 respectively. AM and LC intersect at point P. From point P, a line parallel to BA is drawn intersecting AC at D. Find the ratio AD:DC. Please show how ...

A micrometer screw gauge with pitch of 0.5 mm and 50 divisions on circular scale is used to measure the diameter of a thin wire. Initially, when the gap is closed, the fourth division coincides with the reference line. Three ...

Three distinct numbers are selected uniformly at random from the ten-term geometric sequence with first term 10/9 and common ratio 2 . What is the expected value of their sum? ...

A disc of radius R and mass M is projected on to a horizontal floor with a backward spin such that it's speed of centre of mass is v and angular velocity is ω .What must be the minimum value of ω so that the disc eventually ...

Choose the odd one out and give reasons for your answer : Propene,Ethene,1-Butene,2-Butene I choose Ethene as the odd one out because it has no isomers,while the others have atleast 1 isomer. Was I right in my prediction? If ...

i m confused with the order of the outer layers of the eyes... SCLERA CORNEA CONJUNCTIVA... which 1 comes the first...can some1 arrange it inn right order... thnks in advance... :) ...

Two thin convex lenses of focal lengths f1 and f2 are separated by a horizontal distance 'd' ( where f1 and f2 are greater than 'd') and their centres are displaced by a vertical separation 'δ'...Taking the origin of co-ordi ...

A point source 'S' is placed at a height 'h' from the bottom of a vessel of height 'H'(where h is greater than H)..The vessel is polished at the base ..Water is gradually filled in the vessel at a constant rate of α m3/s. Th ...

Consider a usual set-up of Young's Double Slit Experiment with slits of equal intensity. Take 'O' as origin and Y-axis as the screen..If the average intensity between y1 = -(λ.D)/(4d) and y2 = +(λ.D)/(4d) equals 'n' times t ...

How many ways can you put 10 sweets into 3 bags so that each bag contains an odd number of sweets? ...

1. If the normal to the curve y= f(x) at x=0 be given by the equation 3x - y + 3 = 0 ,then the value of lim x→0 [x2/{ f(x2) 5 f(4x2) + 4f(7x2)}-1 ] is ???? 2.The tangent to the graph of the function y=f(x) at the point with ...

sir in the third slide rate of reaction is given aA + bB  cC + dD We can write Rate of reaction= - 1/a ( Δ[A]/Δt) )=- 1/b ( Δ[B]/Δt )= 1/c Δ[C]/Δt )= 1/a ( Δ[D]/Δt ) why is it 1/a and not a??? from where are we get ...

The door of a running refrigerator inside a closed room was left open.Then- (a)The room will be cooled slightly (b)The temperature of the room will be lowered (c)The temperature of the room will not be affected (d)The room wi ...

Integration of Body = ?? ...

1. a) analogous organs indicate ---------- evolution. b) --------were functional in ancestors but are rudimentary in modern descendants. 2.under which category does it lies..??? homologous or analogous..??? a) potato and runn ...

Prove that mechanical energy is conserved when a body is thrown upwards. Please help me! My exam starts in two days and I need this answer by Friday. IT'S EXTREMELY URGENT. ...

The value of gas constant R for hydrogen is- (a)1/2 calorie (b)2 calories/mole Kelvin (c)4 calories (d)1 calorie Please explain how??? ...

In given gas,sound travels at a speed of 300m/s.Find the order of the root-mean-square velocity of the molecules of this gas- (a)40m/s (b)400m/s (c)4000m/s (d)4m/s ...

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∫dx/sin2x+tan2x ...

when the gametes fuse to form the zygote...both the male n the female gametes, they contribute half the genetic material...do they contribute half their chromosomes..???....i don't think so...n if they do not contribute then ...

Solid Cylinder, rolls over horizontal surface Find the max value of v which still permits it to roll over incline plane without a jump, sliding is absent. *Image* ...

C1 and C2 be two concentric circles.The radius of C2 being twice that of C1.From a point P on C2 tangents PA and PB are drawn to C1.Prove that the centroid of the triangle PAB lies on C1. ...

*Image* The answer is B......ok dats fine dat a cabocation will form so it prooceeds in forward direction....but wouldn't d C option should also be correct......Why we r not accounting for d resonance stabilisation of RCOO-?? ...

A free point charge q and mass m is at rest at the origin .A constant electric field E = E0(i^- j^) and constant magnetic field B = -B k^ is present in whole region .When this charge reaches at position (2,20) its speed be ∠...

If PQ is a double ordinate of the Hyperbola x2/a2 - y2/b2 = 1 such that OPQ is an equilateral triangle ,O being the centre of the hyperbola..Then the range of eccentricity 'e' of the hyperbola is???? ...