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but i hav not changed the question!!!
this is question with limits is given on same page of buk!!

device whose focal lenght cannot be obtained directly is

a) concave mirror b) concave lens

c) convex mirror d) convex lens

yes its indefinite!!!!@@!!!!!

@ elastiboysai (2007)
ur sol sems to be correct!!
but i don't think a question from a cbse buk will be so lenghty for 4mm

sry, i too didn't understand this!!!
but the question is this !!!
options:
a) at gr8 heights b) at intermediate height

c) ht does not matter d)close to earth

DURING EXP. TO CALCULATE HEAT OF NEUTRALIZATION OF STRONG ACID AND BASE CONC. TEMP SHUD BE RECORDED TILL

a) const temp is achieved b) max temp is achi....

c) minimum temp. achie......... d) NONE!!

^{LT x-->2} { ^{[ ]}

[1+^{[ ]}

(2+x) ] - ^{[ ]}

3} / ( x-2)

AT WHAT HEIGHT A PEAK IONIZATION OCCURS???

TEMPRATURE OF BLACK BODY IS RAISED BY 5% HEAT RADIATED WUD INCREASE BY_______________.

dx/(x-

)

(x-

)(

-x)

WHAT IS THE PROBABILITY OF B WINNING THE GAME IF GETTING A SIX ON A DICE MEANS WINNING ?? GIVEN THAT THREE PPL. PLAY THEIR CHANCES RESP..(B GETS 2ND CHANCE)

(LOG (X²+1)- LOG(X))(1/1+X²) dx

gr8!!!!!!!

pics not visible!!!

pls. show the sol of lhl and rhl

f(x)= (e^1/x-1) / (e^1/x + 1) ; x (not equal to ) 0

2; when x=0!!