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a manometer reads the pressure of a gas in an enclosure as shown in (a).When some of the gas is removed by a pump,the manometer reads as in (b).the liquid used is mercury and atm pressure is 76 cm of mercury. 1) find the abso ...

If two plane mirrors are placed perpendicular to each other , if a ray of light falls at an angle "a " with the plane of one mirror. Find the value of "a" so that reflected ray becomes parallel after reflection from second mi ...

Only One Answer Correct. *Image* ...

*Image* Distance b/w A & B is l Rate of area swept by the conducting element = dA/dt = V l TRUE / FALSE ...

A bird in air is diving veritcally over a tank with speed 5 cm/s. Base of tank is silvered. A fish in the tank is rising upward along the same line with speed 2 cm/s. Water level is falling at a rate of 2 cm/s.{n of wter is 4 ...

The walls of a closed cubical box of edge 50 cm are made of a material of thickness 1 mm and thermal conductivity 4 * 10^-4 cal per sec per cm per °C. The interior of the box maintained at 100°C above the outside temperatur ...

Statement 1: Two particles are projected towards each other from a very large distance along the line joining them on a smooth frictionless surface. Their speeds may decrease as they approach each other. Statement 2: The net ...

Q) The tangents that are parallel to the bisector of the first co-ordinate angle for the curve F(x)= ∫0x 2tdt are a) y=x- 1/4 b) y=x+ 1/4 c) y=x- 3/2 d) y=x+ 3/2 ...

arrange the following free radicals in increasing order of stability *Image* ...

Q1 \ \int \frac{dx}{x^{22}(x^7-6)} Q2 \ Let \ t(x)=u(x)-v(x) \ where \ u(x)=sin^62\pi x \ and \ v(x)=lnx Prove \ area \ enclosed \ by \ u(x) \ and \ v(x) \ is \sum_{r=0}^{n}{\int_{x_r}^{x_{r+1}}{(-1)^r.t(x)dx}} \ where \ x_0, ...

Jinke paas ab tak nahi hain, unke liye...[4] ( http://www.icbse.com/2009/iitjee-last-year-question-papers-solutions/ ) ...

Integrate the foll. ∫ 12x12+5x9/x5+x3+1 dx ∫etanx(xsec2x + sin 2x )dx ∫e3x( 2+3sin2x/1+cosx )dx ...

1. For the cell ( at 298 K ) Ag(s)| AgCl(s) | Cl- (aq)||AgNo3(aq)|Ag(s) Which of the following is/are correct- (A) The cell emf will be zero when [Ag+] in anodic compartment = [Ag+] in cathodic compartment . (B) The amount of ...

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If x-2y+4=0 and 2x+y-5=0 are sides of a isosceles triangle having area 10 sq. units.Find the equation of third side?(Note that its an right angled triangle) ...

(1) Various injective functions f are defined from set A≡ {1,2,3,4} to {1.2.3.4.5.6.7.8.9.10} and a function among them is choosen randomly. If it is found to be increasing , then the probability that f(4) = 8 is (A) 1/12 ( ...

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1)if Y represents acceleration and X momentum,then the dimension of (d2Y / dX2 )1/2 is ??? A) M-1 L-1/2 T0 B) M L1/2 T-1/2 C) M-1 L1/2 T1/2 D)M0 L1/2 T1/2 2)the position vector of a particle is given by r=r0(1-αt)t ,where t ...

4)a smooth 2 kg collar C shown in figure is attached to a spring having a stiffness of k=3N/m and an unstretched length of 0.75m. If the collar is released from rest at A,determine its acceleration and the normal force at the ...

Let a real function f(x) satisfy following conditions : 1)f(x+y+1)=(\sqrt{f(x)}+\sqrt{f(y)})^2 2)f(0)=1 3)f(x)\geq 0 \ \forall x\in R Find f(x) ...

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find the resistance between the points a and b. please show me the full solution *Image* ...

1> \lim_{x\rightarrow 0}\frac{e^{-4x}-1}{e^{-2x}+e^{-x}-2} 2> \lim_{x\rightarrow -1^{+}}\frac{\sqrt{\pi}-\sqrt{cos^{-1}x}}{\sqrt{x+1}} 3> \lim_{x\rightarrow 1}(1-x)tan(\frac {\pi x}{2}) ...

z=\frac{3}{2+cos\theta + i \sin\theta } the locus of z is ? ...

(1) Which of the following is/are INCORRECT about kinetic friction ? (A) always acts in opposite direction of the applied force (B) total work done by this friction force on the system may be zero (C) direction of friction is ...

f(x) = log { log|sin x|(x2-8x+23) - 3/log2|sin x| } Find the domain of this function. ...

In a certain region of space, the potential field depends on x & y coordinates as- V =(x2+y2) . Represent graphically the electric field lines in the corresponding x-y plane. ...

if f'(x/y).f(y/x) = \frac{x^{2}+y^{2}}{xy} for all x,y belongs to positive R and f(1)= 1 then f2(x) is????????? ...

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If position of a particle varies with time as x = t^3 - 3t^2, whre t is in second. Then magnitude of displacement is equal to distance traveled of the particle at t=???? ...