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Two coaxial solenoids are made by winding thin insulated wire over a pipe of cross sectional area A = 10 cm2 and length = 20 cm. If one of the solenoids has 300 turns and the other 400 turns, their mutual inductance is ? ...

tollens reduce aromatic aldehyde dut fehlings do not why ...

An air bubble of volume V is released from the botoom of a lake which has depth of 11m. find the volume of the bubble at the surface of the lake. the water ha s density 1000 kg/m3. at the release point of the bubbleand at the ...

(2 3 +4)sinx+4cosx lies in the interval??? (a)(-4,4) (b)(-2 5 ,2 5 ) (c)(-2+ 5 ,2+ 5 ) (d)(-2(2+ 5 ),2(2+ 5 )) ...

How many chiral carbon atoms are present in 2, 3, 4-trichloropentane ? 4 1 . 2 3 how to decide ?any technique ...

If a body is positively charged then a It may have more protons b It may have only protons c It may have only electrons d Both a and b ...

If 3pi/4<A<pi then 2cotA+cosec2A is equal to ??? ...

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature??? 1)-COOH,-SO3H,CONH2 2)-SO3H,-COOH,-CONH2 ...

A current of electricity is passed through a copper voltameter and a water voltameter connected in series if the copper anode of the copper voltameter now weighs 16 mg less ,hydrogen liberated at the cathode of the water volt ...

An aqueous solution containing 100grams of dissolved MgSO4 is fed to a crystallizer where 80% of the Dissolved salt crystallises out as MgSO4. 6H2O Crystals. How many grams of the hexahydrate salt Crystals are obtained from t ...

Assuming complete ionisation, the pH of 0.1M HCL is 1. The molarity of H2SO4 with the same Ph is: a) 0.1 b) 0.2 c) 0.05 d) 2.0 Acetone and acetaldehyde are: a) functional isomer b) position-isomers c) chain isomers d) not iso ...

LET \left(a_{in} \right)_{n\geq 1} i\epsilon \left\{1,2,3,.,p \right\} sequences of strictly real pozitive numbers. Prove that: ( \sum_{k=1}^{n} \frac{1}{ \prod_{i=1}^{p} a_{ik} } ) ( \sum_{k=1}^{n}( \sum_{i=1}^{p} a_{ik} )^{ ...

Three Concentric metallic spherical shells of radius R, 2R, 3R are given charges Q1,Q2, Q3 respectively. It is found that the surface charge densities of the outer surface of theshells are equl . Then the ratio of the charges ...

*Image* Two particles A and B each of mass m are attached by a light inextensible string of length 2l. The whole system lies on a smooth horizontal table with B initially at a distance l from A. The particle at end B is proje ...

*Image* Two blocks of mass 3 kg and 6 kg respectively are placed on a smooth horizontal surface. They are connected by a light spring of force constant k=200 N/m. Initially the spring is unstretched. The indicated velocit ...

Locus of reflection of the foci of the ellipse x2/16+y2/12=1 in its tangents are the curves C1 and C2 .Curve C1 and C2 meet at P and Q.Let the line passing through P and Q be L.Hyperbola H is drawn with P and Q as its foci an ...

x^{2}-y^{2}-4x-2y+2=0 represents a] a pair of straight lines b] ellipse c]hyperbola centred at(2,-1) d]circle centred at(2,1) ...

Which one of the following is true? (a) log(x+ y) = logx + logy (b) log xy = logx logy (c) log x / y = log x / log y (d) None of these ...

in [0,1] , x^{2}(1-x)^{6} attains maximum value at which point? ...

if z=x^{2}y +3xy^{4} and x=sin2t \; , y=cost find \frac{dz}{dt}\; at \; t=0 ...

tan {x} = sin {x} ...

where is the interstitial position present in a lattice cube . Is it the void?? ...

This is a bit dirty but "standard" question if I could call it so You must have seen it many times find the sum of all 6 digit numbers that can be formed using 1,1, 3, 4, 6, 9 ...

A traffic light is green for 30 seconds, then red for 30 seconds, then green for 30 seconds and so on. What is your expected delay? ...

Match each of the diatomic molecules in column I with its property/properties in column II Column I Column II (A) B2 (p) Paramagnetic (B) N2 (q) Undergoes oxidation (C) O2- (r) Undergoes reduction (D) O2 (s) Bond order≥2 (t ...

A thin glass (refractive index 1.5) lens has optical power of -5D in air . Its optical power in a liquid medium with refractive index 1.6 will be ? 1)2D 2)-2D 3)-1D 4)1D ...

at ideal diatomic gas goes througha process where its pressure is inversely proportional to its temperature. a]calculate molar specific heat for the process. b] find the work dne by 2 moles of the gas if its temperature chang ...

2 moles of an ideal diatomic gas is taken through PT=constant. its temperature is increased from T to 2T. find the work done by the system. ...

why isn't potential energy corresponding to a non-conservative force defined ...

\lim_{n->infinity} \frac{1}{2n}[log(2nCn)] ...