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1)The barrier potential of a sillicon p-n junction is 0.7 V. Can we measure it using voltmeter. 2)Which one will you prefer for the rectification of low AC voltages - a Si diode or a Ge diode? Why? 3)Why a transistor cannot b ...

consider the attractive central force of the form F(r)=-K/rn K is a constant For a stable circular orbit to exist a)n=2 b)n<3 c)n>3 d)n=-1 Its a ques with more than one ans correct Please explain the ans also ...

1) Evaluate limx->infinity cosx/x or explain why it doesnt exist? 2) Evaluate lim t->4 (t- 3t+4 )/t-4 or explain why it doesnt exist? 3) Evaluate lim x->1 x-1 / x-1 or explain why it doesnt exist? 4) Let f(x)= sinx/x ...

*Image* Find the velocity of fluid which flows through the small hole.( find velocity v , with respect to l & h). Given that whole pipe moves along the given axis & length of pipe is l (part of it containing fluid is h). ...

theres a hollow sphere filled with water................the temperature outside is T(<0 C) and radius of sphere is R.........density of ice is P and thermal conductivity is k................find da time required for da ent ...

an ideal gas is initially at temperature T and volume V Its volume is increased by V' due to an increase in temperature T' Pressure remaining constant The quantity s=V'/(VT') varies with temperature as Isn't the asked quantit ...

y entropy of solution increases on mixing non volatile solute with pure solvent ...

as eureka stated lets put up some problemss that might be of good help for jee 2009 revision aspect. i just did not want to mix it up with his thread and make it go unnoticed like my chemistry hub 1}show that the focal length ...

post all your board question here evry1 try 2 provde answer with steps plzzzzzzzzz ...

Q.1 Which of the following statement is true & why? (A) Ex= Ey =Ez (B) Ex>Ey>Ez (C) Ex=Ez<Ey (D) Ex<Ey<Ez *Image* Q2. A parallel plate capacitor is charged to potential V by a source of emf . After removing the ...

What is the product when 2,2 dimethyloxirane reacts with LiAlH4 in acidic medium? ...

Match the following Consider the linear equations. ax+by+cz=0 bx+cy+az=0 cx+ay+bz=0 (A) a+b+c≠0 and a2+b2+c2=ab+bc+ca (B) a+b+c=0 and a2+b2+c2≠ab+bc+ca (C) a+b+c≠0 and a2+b2+c2≠ab+bc+ca (D) a+b+c=0 and a2+b2+c2=ab+bc+ ...

A hollow cone of dimensions R,H , is hung vertically , (completely)inside a liquid of density 'p' , its vertex just touching the liquid surface.The force due to the liquid acting on the suface of the cone is kÎ pgHR2 where k ...

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plot the graph of {x+y}={x2} ...

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its an event organosed by CMI- chennai mathematical institute it has many events, u people can check out. by the way its on march 14 so think about your boards toooo{because will have to go to chennai for this} http://fiesta. ...

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anyone pls tell me whether a capacitor ll discharge only if it s charged fully???????????? ...

A Simple Pendulum consisting of a Mass M attached to a string of length L is released from rest at an angle α. A pin is located swings down, the string hits the pin. The max angle θ which string makes with the vertical afte ...

At t=0, an ant is at(-1m.0m) & a spider is at (1m,0m). The ant starts walking counterclockwisealong the unit circle,& spider starts creeping to the right along the X-axis. The ant"s horizontal speed is always half of the spid ...

Which of the following pairs have identical shapes? a) AlCl3, SO3 b) BeCl2, CO2 c) SF6, XeF6 d) XeF2, CO2 In this type of questions shud v consider the fact that AlCl3 and BeCl2 occur as trimers and dimers respectivelty??? co ...

6 dices are tossed simulataneously.how many times does exactly 3 dices show 5 or 6?? ...

why cyclohexene reacts with K liquid NH3 gives cyclohexane giving poor yield???????? ...

Absolutely amazing! Beauty of Mathematics !!!!!!! 1 x 8 + 1 = 9 12 x 8 + 2 = 98 123 x 8 + 3 = 987 1234 x 8 + 4 = 9876 12345 x 8 + 5 = 98765 123456 x 8 + 6 = 987654 1234567 x 8 + 7 = 9876543 12345678 x 8 + 8 = 98765432 1234567 ...

why 3,3dimethylbutan2one does not give iodoform test? ...

assertion:at the centre of the earth a body has centre of mass but no centre of gravity Reason: This is becuse g=0 at the centre of the earth Please explain it also ...

two integers are choosen at random and multiplied. the probability that the product is an even integer is ?????????????? ...

*Image* compare rates. ...

2 men plan to meet at the town's clock tower on 29 Aug 2009 between 4pm to 6 pm. But they are both very impatient and cant wait more than 20 mins for the other person to come. so they can come anytime between 4 to 6 and will ...