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no yaar...hole concept for all semicondutors and also insulators .....not for doped alone as you said..... you can't apply it in conductors because.. in conductors it is not covalent bonds...the atoms exist as ions and all valence electrons are free... holes concept is applied where you have covalent bonds which break on application of high temperature to create vacancies or holes......rate if useful
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x=AsinWt........ 5=AsinW....5=Asin2W......DIVIDING, sinW=sin2W.......so 2cosW sinW = sinW.....so cosW=1/2... .....
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INTENSITY IN QUANTUM PHYSICS MEANS THE NUMBER OF PHOTONS INCIDENT PER UNIT ARE PER UNIT TIME...IN WAVE OPTICS ITS THE ENERGY INCIDENT PER UNIT AREA PER UNIT TIME.... RATE IF USEFULL
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TELL ME WATS UNCLEAR...ANGLE X IS THE ANGLE THROUGH WHICH THE CENTRE OF CYL. ROTATES DURING THE TIME ITS FALLING DOWN...OK??
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 ......HOPE U KNOW IT...
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NOT ANGRY AT ALL... I WON'T B ANGRY SOON WITH MY FRIENDS...I WAS LAUGHING TO MYSELF ABOUT WAT IDID
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ITS EASY YAAR.... IF THERE CAN'T BREAK IN BETWEEN.... AS YOU KNOW TANGENT DRAWN AT ANY POINT ON AN ELECTRIC FIELD LINE GIVES THE DIRECTION OF ELECTRIC FIELD AT THAT POINT... SO IF A BREAK OCCURS ANY POINT THAT PLACE OF DISCONTINUITY CAN GIVE RISE TO INFINITE NUMBER OF TANGENTS....AS ONE CAN DRAW INFINITE LINES PASSING THROUGH A GIVEN POINT... THIS HERE IMPLIES ELECTRIC FIELD VECTOR HAS MANY DIRECTIONS AT A TIME WHICH IS IMPOSSIBLE.....RATE IF USEFULL
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sorry guys..... the quest is lenghthy n i don't know how to enter it there.....any way i liked your responce akarshita...your name suits you well....question is this..................... THERE IS A SOLID SPHERE KEPT ON A RECTANGULAR SURFACE AT ITS EDGE SUCH TAT THE CENTRE OF THE CYLINDER IS ABOVE THE EDGE .....OK??? NOW ANY SLIGHT TOUCH CAN CAUSE THE CYLINDER FALL DOWN..THERE IS ENOUGH FRICTION TO MAKE IT ROLL ON THE BLOCK..... WHAT IS THE VALUE OF ANGLE X ABOUT WHICH IT ROLLS TILL THE TIME JUST BEFORE IT FALLS DOWN...???? IS IT COOL NOW??? AND SHRAMAN R U HAPPY???
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sorry guys..... the quest is lenghthy n i don't know how to enter it there.....any way i liked your responce akarshita...your name suits you well....question is this..................... THERE IS A SOLID SPHERE KEPT ON A RECTANGULAR SURFACE AT ITS EDGE SUCH TAT THE CENTRE OF THE CYLINDER IS ABOVE THE EDGE .....OK??? NOW ANY SLIGHT TOUCH CAN CAUSE THE CYLINDER FALL DOWN..THERE IS ENOUGH FRICTION TO MAKE IT ROLL ON THE BLOCK..... WHAT IS THE VALUE OF ANGLE X ABOUT WHICH IT ROLLS TILL THE TIME JUST BEFORE IT FALLS DOWN...???? IS IT COOL NOW??? AND SHRAMAN R U HAPPY???
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here's a cool question....
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hey ankit..i didn't follow ur 2nd eqn...i think LHS is mvl/2
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hi dude is it d.,,,only if u know the distance from s2 to red pt you can drcide something....anyway s1 & s3 contribute a maximum at the pt. if s2 has same distance as the others to red pt .then its a maxima..am i right yaar
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HEY YAAR SINCE IT IS ELASTIC I HOPE THE CM(CENTRE OF MASS) OF THE MOVING FELLOW COMES TO REST...SO V OF STATIONARY ROD IS v....APPLYING ANGULAR MOMENTUM CONSERVATION , mvl/2 =mvl/2 (body initially in rest) + mw, w= final ang.vel of the body that was moving ...ITS CLEAR THAT w=0 ...SO ANGULAR VELOCITY OF BODY WHICH WAS IN REST IS vl/2 AND ITS VELOCITY IS v
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1) EQN OF ANY TANGENT Y=mX+/-c, WHERE Y= y-2 ,X=x+2 AS YOUR CIRCLE IS (x+2)^2 + (y-2)^2 =4.....SINCE THE INTERCEPTS ARE EQUAL m=+/- 1.... r=RADIUS=2..SO EQNS ARE  . 2)slope of them is 3/4. rewriting them  ..here it is clear that these lines are parallel ..so geometrically the distance between them must be the diameter ....distance= .1 so radius= .05..... HOPE I'M RIGHT ...PLS RATE IF ITS OK
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-40..ISN'T IT???......IN MULTIPLICATION FINAL ANSWER MUSTN'T EXCEED THE No. OF SIG. FIGURES IN THE No IN THE QUESTION WITH LEAST SIG. FIGURES ...SO IN BOTH MULTIPLICATIONS IN UR QUEST THE ANSWER SHOULD HAVE ONLY 2 SIGN.FIGURES....SO ANSWERS ARE 360 & 400 TEIR DIFF IS -40..-40 HAS 2 SIG. FIGURES AS IN THE PROCESS 300-400.....PLS RATE IF RIGHT..
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WHAT IS ICOSAHEDRAL STRUCTURE
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PH=.5(pKa+pKw+logC) . SO IT IS PH=8.87....C=CONCENTRATION IS .1 AS 1 MOLE OF SALT GIVE 2 MOLES OF ACETATE IONS.
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ITS A) DUDE......S-1 &S-2 ARE RIGHT . S2 IS THE EXPLANATION S1... f'(x) DOESN'T EXIST AS .... f(x) IS NOT CONTINUOUS AT INTEGER POINTS AND HENCE f'(x) IS NOT DEFINED
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YOU CAN DO IT LIKE THIS....MUTIPLY NUMERATOR AND DENOMENATOR BY TAN^2 X ( YOUR FAVOURITE)....THEN BY SEC^2X...YOU'LL GET (SEC^2X * TAN^2X dX)/ (SEC^2X(TAN^2X+4).. NOW PUT TAN^2X=T dT=SEC^2X dX....REWRITE NOW..YOU'LL GET In(0, INFINITE) T^2 dT/(I+T^2)(T^2+4)... NOW DO IT BY PARTIAL FRACTION PLS RATE IF YOU LIKE
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