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Recent questions tagged q8
Questions
$(i)^{243}$=.................. .
jeemain
eamcet
math
1991
fitb
q8
asked
Sep 13, 2013
by
meena.p
0
answers
The probabilities of problem being solved by two students are $\large\frac{1}{2}$ and $\large\frac{1}{3}$. Find the probability of the problem being solved.
jeemain
eamcet
math
1991
q8
asked
Sep 12, 2013
by
meena.p
1
answer
The energy of the electron in the hydrogen atom is given by the expression:
jeemain
eamcet
chemistry
1991
q8
asked
Sep 11, 2013
by
meena.p
1
answer
The resistance to be used to convert a $50\; \Omega$ resistance galvanometer of 10 mA into 500 V range voltmeter is ................. .
jeemain
eamcet
physics
1991
fitb
q8
asked
Sep 11, 2013
by
meena.p
0
answers
The Spheres of different materials one with double the radius and one-fourth wall thickness of the other are filled with ice. If the time taken for complete melting of ice in large radius one is 25 minutes and that for smaller one is 16 minutes, the ratio of thermal conductivities of materials of large sphere to small sphere is:
jeemain
eamcet
physics
1991
q8
asked
Sep 10, 2013
by
meena.p
1
answer
Choose the correct comparison of reactivity of molecules in E2 elimination reaction
jeemain
chemistry
unit22
organic-chemistry
halogens
q8
difficult
asked
Sep 5, 2013
by
sreemathi.v
1
answer
About reactivity in SN1reaction following statements are noted .Pick out the correct pair
jeemain
chemistry
unit22
organic-chemistry
halogens
q8
medium
asked
Aug 23, 2013
by
sreemathi.v
1
answer
The predominant product formed when 3− methyl −2−pentene reacts with $HOCl$ is
jeemain
chemistry
unit22
organic-chemistry
halogens
q8
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
The feasible region for a LPP is shown in fig.12.9.Find the maximum value of $z=11x+7y$
cbse
class12
ch12
q8
p251
short-answer
exemplar
sec-a
easy
math
asked
Aug 20, 2013
by
sreemathi.v
1
answer
A satellite moves in a circle around earth The radius of this circle is equal to one half of the radius of the moon's orbet. The satellite completes one revolution in
jeemain
physics
class11
unit6
gravitation
q8
easy
asked
Aug 9, 2013
by
meena.p
1
answer
A block of weight $W$ is pulled along a distance $d$ on a table. The work done by the weight is
jeemain
physics
class11
work
work-done-by-a-constant-force
ch6
work-power-energy
q8
easy
asked
Jul 17, 2013
by
meena.p
1
answer
Solve the following differential equation :$x\large\frac{dy}{dx}$$-y=\sqrt{x^2+y^2}$.
cbse
class12
modelpaper
2005
sec-b
q8
math
asked
Jul 16, 2013
by
sreemathi.v
1
answer
$\mu$ and $\in _0$ denote the permeability and permitting of free space, the dimensions of $\mu_0\in _0$ are
jeemain
physics
class11
ch2
units-and-measurement
q8
easy
dimensional-formulae-and-analysis
asked
Jun 17, 2013
by
meena.p
1
answer
$P$ represents the variable complex number $z$.Find the locus of $P$,if $arg\bigg(\large\frac{z-1}{z+3}\bigg)=\large\frac{\pi}{2}$
tnstate
class12
bookproblem
ch3
sec3
exercise3-2
q8
q8-5
p150
asked
Jun 10, 2013
by
sreemathi.v
1
answer
$P$ represents the variable complex number $z$.Find the locus of $P$,if $\mid 2z-3\mid=2$
tnstate
class12
bookproblem
ch3
sec3
exercise3-2
q8
q8-4
p150
mar-2009
modelpaper
asked
Jun 10, 2013
by
sreemathi.v
1
answer
$P$ represents the variable complex number $z$.Find the locus of $P$,if $Re\bigg(\large\frac{z-1}{z+i}\bigg)$$=1$
tnstate
class12
bookproblem
ch3
sec3
exercise3-2
q8
q8-3
p150
asked
Jun 10, 2013
by
sreemathi.v
1
answer
$P$ represents the variable complex number $z$.Find the locus of $P$,if $\mid z-5i\mid=\mid z+5i\mid$
tnstate
class12
bookproblem
ch3
sec3
exercise3-2
q8
q8-2
p150
mar-2010
modelpaper
asked
Jun 10, 2013
by
sreemathi.v
1
answer
$P$ represents the variable complex number $z$.Find the locus of $P$,if $Im\bigg[\large\frac{2z+1}{iz+1}\bigg]$$=-2$
tnstate
class12
bookproblem
ch3
sec3
exercise3-2
q8
q8-1
p150
asked
Jun 10, 2013
by
sreemathi.v
1
answer
The equation of the tangent to the curve $y=\large\frac{x^{3}}{5}$ at the point $(-1,-1/5)$ is
tnstate
class12
bookproblem
p229
objective
q8
modelpaper
mar-2008
asked
May 15, 2013
by
poojasapani_1
1
answer
If $A$=$\begin{bmatrix} 2 & 1 \\3 & 4 \end{bmatrix}$, than (adj $A)A$=
tnstate
class12
bookproblem
p263
objective
q8
modelpaper
mar-2007
jun-2007
oct-2008
asked
May 7, 2013
by
poojasapani_1
1
answer
Prove that the curve $2x^{2}+4y^{2}=1$ and $6x^{2}-12y^{2}=1$ cut each other at right angles.
tnstate
class12
bookproblem
ch5
sec-1
exercise5-2
p18
q8
modelpaper
jun-2008
asked
May 3, 2013
by
poojasapani_1
1
answer
Two sides of a tringle have length $12$m and $15$m. The angle between them is increasing at a rate of $2^{\circ}/min.$ How fast is the length of third side increasing when the angle between the sides of fixe is $60^{\circ}$?
tnstate
class12
bookproblem
ch5
sec-1
exercise5-1
p90
q8
asked
May 1, 2013
by
poojasapani_1
1
answer
Find the area of the region bounded by the parabola $y^{2}=4x$ and the line $2x-y=4$
tnstate
class12
bookproblem
ch7
sec-1
exercise7-4
p117
q8
asked
Apr 28, 2013
by
poojasapani_1
1
answer
Evaluate the following problems using properties of integration: $\int\limits_{0}^{3}\large\frac{\sqrt{x}dx}{\sqrt{x}+\sqrt{3-x}}$
tnstate
class12
bookproblem
ch7
sec-1
exercise7-2
p98
q8
modelpaper
mar-2006
mar-2007
jun-2009
asked
Apr 27, 2013
by
poojasapani_1
1
answer
Evaluate the following problems using second fundamental theorem: $\int\limits_{0}^{1}\large\frac{(\sin^{-1}x)^{3}}{\sqrt{1-x^{2}}}$$dx$
tnstate
class12
bookproblem
ch7
sec-1
exercise7-1
p86
q8
asked
Apr 27, 2013
by
poojasapani_1
1
answer
Find$C$. $\mu$ and $c^{2}$ of the normal distribution whose probability function is given by $f{x}$=$C$$e^{\large -x^2+3x}$$,-\infty<$X$<\infty$.
tnstate
class12
bookproblem
ch10
sec-1
exercise10-5
p228
q8
modelpaper
mar-2008
jun-2009
mar-2010
asked
Apr 23, 2013
by
poojasapani_1
1
answer
Find the volume of the parallelopiped whose three co-terminus edges are represented by the vectors $\hat{i}+\hat{j}+\hat{k},\hat{i}-\hat{j}+\hat{k}$ and $\hat{i}+2\hat{j}-\hat{k}$
isc
class12
modelpaper
2003
part-2
sec-b
q8
q8-b
asked
Apr 22, 2013
by
sreemathi.v
0
answers
The position vectors of the vertices of a triangle are given as $2\hat{i}-\hat{j}+\hat{k},\hat{i}-3\hat{j}-5\hat{k}$ and $3\hat{i}-4\hat{j}-4\hat{k}$.Prove that it is a right-angled triangle.
isc
class12
modelpaper
2003
part-2
sec-b
q8
q8-a
asked
Apr 22, 2013
by
sreemathi.v
0
answers
If $x+\large\frac{1}{x}$$ =2\cos\;\theta $ and $y+\large\frac{1}{y}$$=2 \cos \;\phi$ show that $\large\frac{x^{m}}{y^{n}} - \frac{y^{n}}{x^{m}}$$ = 2i \;sin\left ( m\theta -n\phi \right )$
tnstate
class12
bookproblem
ch3
sec3
exercise3-4
q8
q8-2
p158
asked
Apr 19, 2013
by
geethradh
1
answer
If $x+\large\frac{1}{x}$$ =2\cos\;\theta $ and $y+\large\frac{1}{y}=$$2 \cos \;\phi$ show that $\large\frac{x^{m}}{y^{n}}+ \frac{y^{n}}{x^{m}} $$= 2 \cos \left ( m\theta -n\phi \right )$
tnstate
class12
bookproblem
ch3
sec3
exercise3-4
q8
q8-1
p158
asked
Apr 19, 2013
by
geethradh
1
answer
For the distribution function given by $f(x) = \left\{ \begin{array}{l l} 0&\quad\text{x<0}\\ x^{2} & \quad \text{$0$$\leq$$x$$\leq$$1$}\\ 1 & \quad \text{x>1} \end{array} \right.$\[\] Find the density function. Also evaluate $p(x>0.75)$
tnstate
class12
bookproblem
ch10
sec-1
exercise10-1
p204
q8
q8-3
asked
Apr 19, 2013
by
poojasapani_1
1
answer
For the distribution function given by $f(x) = \left\{ \begin{array}{l l} 0&\quad\text{x<0}\\ x^{2} & \quad \text{$0$$\leq$$x$$\leq$$1$}\\ 1 & \quad \text{x>1} \end{array} \right.$\[\] Find the density function. Also evaluate $p(x\leq0.5)$
tnstate
class12
bookproblem
ch10
sec-1
exercise10-1
p204
q8
q8-2
asked
Apr 19, 2013
by
poojasapani_1
1
answer
If $\large\overrightarrow a\:and\:\overrightarrow b$ are unit vectors then prove that $ \large\frac{1}{2}|\overrightarrow a-\overrightarrow b|=sin\frac{\theta}{2}.$
class12
ch10
kvquestionbank2012
q8
b
difficult
sec-b
asked
Apr 19, 2013
by
rvidyagovindarajan_1
1
answer
Find the unit vector perpendicular to the two vectors $\overrightarrow{i}+2\overrightarrow{j}-\overrightarrow{k}$ and $2\overrightarrow{i}+3\overrightarrow{j}+\overrightarrow{k}$.
isc
class12
modelpaper
2004
part-2
sec-b
q8
q8-b
asked
Apr 19, 2013
by
sreemathi.v
0
answers
Show that the sum of the squares on the sides a parallelogram is equal to the sum of the squares on the diagonals of the parallelogram.
isc
class12
modelpaper
2004
part-2
sec-b
q8
q8-a
asked
Apr 19, 2013
by
sreemathi.v
0
answers
A candidate is selected for interview of management trainees for 3 companies.For the first company,there are 12 candidates,for the second there are 15 candidates and for the third,there are 10 candidates.Find the probability that he is selected in at least one of the companies.
isc
class12
modelpaper
2005
sec-a
q8
q8-b
asked
Apr 17, 2013
by
sreemathi.v
1
answer
In a certain city,the probability of not reading the morning newspaper by the residents is $\large\frac{1}{2}$ and that of not reading the evening newspaper is $\large\frac{2}{5}$.The probability of reading both the newspapers is $\large\frac{1}{5}$.Find the probability that a resident reads either the morning or evening or both the papers.
isc
class12
modelpaper
2005
sec-a
q8
q8-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
A card is drawn at random from a pack of 52 playing cards.What is the probability that the card drawn is neither a spade nor a queen?
isc
class12
modelpaper
2006
sec-a
q8
q8-b
asked
Apr 16, 2013
by
sreemathi.v
0
answers
A and B throw two dice each.If A gets a sum of 9 on his two dice ,then find the probability of B getting a higher sum.
isc
class12
modelpaper
2006
sec-a
q8
q8-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
Solve the following differential equation; $(D^{2}-2D-3)$$y=\sin$$x\cos$$x$
tnstate
class12
bookproblem
ch8
sec-1
exercise8-5
p150
q8
asked
Apr 16, 2013
by
poojasapani_1
1
answer
Solve the following. $(y - x)\large\frac{dy}{dx}$=$a^{2}$
tnstate
class12
bookproblem
ch8
sec-1
exercise8-4
p140
q8
asked
Apr 16, 2013
by
poojasapani_1
1
answer
Assuming that on an average one telephone out of 10 is busy,seven telephone numbers are randomly selected and called.Find the probability that three of them will be busy.
isc
class12
modelpaper
2007
sec-a
q8
q8-b
asked
Apr 16, 2013
by
sreemathi.v
1
answer
The bag 'A' contains 3 white and 2 black balls while the bag 'B' contains 2 white and 5 black balls.One of the bags is chosen at random and a ball is drawn from it.What is the probability that the balls is white.
isc
class12
modelpaper
2007
sec-a
q8
q8-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
The probability that a teacher will give an unannounced test during any class meeting is $\large\frac{1}{5}$.If a student is absent twice,find the probability that the student will miss at least one test.
isc
class12
modelpaper
2008
sec-a
q8
q8-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Solve the following $ ydx +xdy=e^{-xy}\;dx $ if it cuts the Y- axis.
tnstate
class12
bookproblem
ch8
sec-1
exercise8-2
p133
q8
asked
Apr 15, 2013
by
poojasapani_1
1
answer
There are 3 urns A,B and C.Urn A contains 4 red balls and 3 black balls.Urn B contains 5 red balls and 4 black balls.Urn C contains 4 red balls and 4 black balls.One ball is drawn from each of these urns.What is the probability that the 3 balls drawn consist of 2 red balls and 1 black ball?
isc
class12
modelpaper
2008
sec-a
q8
q8-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
Solve the following $(x+y)^2 \large\frac{dy}{dx}$=$1$
tnstate
class12
math
bookproblem
q8
sec-1
exercise8-2
p133
q7
jeemain
differential-equations
modelpaper
oct-2008
asked
Apr 15, 2013
by
poojasapani_1
1
answer
An article manufactured by a company consists of two parts A and B .In the process of manufacture of part A,9 out of 104 parts may be defective.Similarly,5 out of 100 are likely to be defective in the manufacture of part B.Calculate the probability that the article manufactured will not be defective.
isc
class12
modelpaper
2009
sec-a
q8
q8-b
asked
Apr 12, 2013
by
sreemathi.v
0
answers
Bag A contains 5 white and 4 black balls,and bag B contains 7 white and 6 black balls.One ball is drawn from the bag A and with out noticing its color,is put in the bag B.If a ball is then drawn from bag B,find the probability that it is black in colour.
isc
class12
modelpaper
2009
sec-a
q8
q8-a
asked
Apr 12, 2013
by
sreemathi.v
0
answers
There are two bags.One bag contains six green and three red balls.The second bag contains five green and four red balls.One ball is transferred from the first bag to the second bag.Then one ball is drawn from the second bag.Find the probability that it is a red ball.
isc
class12
modelpaper
2010
sec-a
q8
q8-b
asked
Apr 12, 2013
by
sreemathi.v
0
answers
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