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High quality lenses are often coated to prevent reflection. A lens has an optical index of refraction of 1.72 and a coating with an optical index of recraction 1.31. For near normal incidence the minimum thickness of the coat ...

I just wanted to ask that the "Upload Image" option in the above menu when clicked gives no response.How to upload image from the computer????Pls Help ...

the sides of a triangle touch a circle x2 + y2 = a2 and 2 of the vertices are on the line |y|=b. find the locus of the third side............ ...

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An urn A contains 3 white and 5 red balls and another one B has 5 white and 3 red balls.2 balls are transferred from A to B and then 1 is drawn from B.What is the probability that it is red? easy one but i 've a small doubt ...

what are hybridisation state of c and n atom in following molecule? *Image* i think- for nitrogen 1=sp2 2=sp3 3=sp3 for carbon 1=sp2 2=sp2 3=sp2 4=sp2 am i correct. ...

dere r 3 main political parties namely 1,2,3 if adjoining table pij [i,j=1,2,3] denote d probability dat party j wins d general elections contestedwhen party i is in d power after d next 2 elections , given dat d party 1 is i ...

if ab=2a+3b, a>0,b>0 then minimum value of ab is??? ...

a letter is known to have come frmeither frm london or frm clifton . on d post mark only d 2 consecutive lrtters ON r legible wat is d chance dat it came frm london? ...

\lim_{x\rightarrow a}\frac{cosx.log(x-a)}{log(e^{x}-e^{a})} ...

how many non prime factors are in the no..2^5 X 3^7 X 9^2 X 11^4 X13^3 todah easy hain ...

prove that 1*2* nCr-- 2*3* nCr-2 + 3*4*nCr-2-.............+(-1)r(r+1)(r+2) = 2* n-3Cr ...

When a white crystalline compound X is heated with K2Cr2O7 and concentrated H2SO4 a reddish brown gas A is evolved. On passing A into caustic soda solution, a yellow coloured solution of B is obtained. Neutralizing the soluti ...

two particles are projected simultaneously in the same vertical plane, from the same point, but with different speeds and at different angles to the horizontal. find the path follwed by one, as seen by the other.... ?? a) a v ...

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Q1 \lim_{m\rightarrow infinity}[(\frac{e^{-100}.100^{100}}{100!})^{m}+5^{m}]^{1/m} ...

Statement 1: and Statement 2: 1. Statement 1 is True, statement 2 is True; statement 2 is a correct explanation for statement 1. 2. Statement 1 is True, statement 2 is True; statement 2 is not a correct explanation for statem ...

Statement 1: If z1 and z2 are two complex numbers such that their product is a real number, then they are conjugate to each other and Statement 2: (x + iy) (x - iy) = x2 + y2, x, y R. 1. Statement 1 is True, statement 2 is Tr ...

Q. 12 Statement 1: Change in internal energy between two states is independent of a thermodynamic process and Statement 2: Change in internal energy U = nCv (T2 - T1) is valid for all processes. 1. Statement 1 is True, statem ...

x^3\frac{dy}{dx}-4x^2coty=e^xcosecy solve the de....and find solution given that y(1)=0 ...

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find .... [ k = 1Σ80( 1/√k ) ] .. where [.] denotes greatest integer function ... ...

A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is? ...

a black body is at temperature of 2880 K. The energy of radiationemitted by this object with wavelength between 499 to 500 nm is U1, between 999 to 1000 nm is U2 and between 1499 and 1500 nm is U3. The wien constant b=2.88x10 ...

At 27 degree C two moles of an ideal monoatomic gas occupy a volume V. The gas expands adiabatically to volume 2V calculate the final temp, change in internal energy and work done. ...

*Image* a uniform bar of length L stands vertically touching a wall OA, when slightly displaced, its lower end begins to slide along the floor . obtain an expression for the angular velocity ω of the bar as a function of θ ...

A monoatomic ideal gas of two moles is taken through a cyclic process starting for A as shown in the figure .The volume ratios are VB/VA=2 and VD/VA=4. If the temperature TA at A is 27 degree C, calculate a) The temperature o ...

An ideal gas is taken through a cyclic thermodynamic process through four steps. The amounts of heat involved in these steps are Q1=5960J, Q2=-5585 J , Q3=-2980 J and Q4= 3645 J respectively. The corresponding works involved ...

A spherical black body with radius 12 cm radiates 450W power at 500 K . If the radius were halved and the temperature doubled, the power radiated in watt would be? ...