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Recent questions tagged q11
Questions
If $\large\frac{3x+2}{(x+1)(2x^2+3)}=\frac{A}{x+1}+\frac{Bx+C}{2x^2+3},$ then $A+C-B$ is equal to :
jeemain
eamcet
math
2006
q11
asked
Nov 5, 2013
by
meena.p
1
answer
If $|\overrightarrow a|=2,\:|\overrightarrow b|=3\:and\:|\overrightarrow c|=4$ and $\overrightarrow a+\overrightarrow b+\overrightarrow c=\overrightarrow O$, then $\overrightarrow b.\overrightarrow c+\overrightarrow c.\overrightarrow a+\overrightarrow a.\overrightarrow b=?$
jeemain
math
class12
ch10
vector-algebra
easy
vector-product
addition-of-vectors
q11
asked
Oct 30, 2013
by
rvidyagovindarajan_1
1
answer
The energy of a photon is $3 \times 10^{-12}$ ergs. What is its wavelength in nm? $(h= 6.62 \times 10^{-27} ergs, c=3 \times 10^{10}cm/s)$
jeemain
eamcet
chemistry
2006
q11
asked
Oct 30, 2013
by
meena.p
1
answer
Assertion (a) : A particle of mass m dropped into a hole made along the diameter of the earth from one end to another and possess simple harmonic mention. Reason (R) : Gravitational force between any two particles is inversely proportional to the square of the distance between them.
jeemain
eamcet
physics
2006
q11
asked
Oct 28, 2013
by
meena.p
1
answer
The nucleotide sequence on antisense strand of DNA which is transcribed as codon that specifies the amino acid serine is
jeemain
eamcet
biology
2011
q11
asked
Oct 25, 2013
by
thanvigandhi_1
1
answer
$\large\frac{2}{3}$ of the atoms in water molecule are hydrogen .What % weight of a water molecule is the weight of 2 hydrogen atoms:
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
percentage-composition
q11
easy
asked
Oct 25, 2013
by
sreemathi.v
1
answer
If $\large\frac{3x}{(x-a)(x-b)}=\frac{2}{x-a}+\frac{1}{x-b}$ then $a:b$ is equal to
jeemain
eamcet
math
2007
q11
asked
Oct 24, 2013
by
meena.p
1
answer
The functional groups present in 'salol' are
jeemain
eamcet
chemistry
2007
q11
asked
Oct 23, 2013
by
meena.p
1
answer
A metal m of equivalent mass E forms an oxide of molecular formula $M_xO_y$ .The atomic mass of the metal is given by the correct equation.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
atomic-and-molecular-masses
q11
medium
asked
Oct 23, 2013
by
sreemathi.v
1
answer
The mass of a planet is half that of the earth and the radius of the planet is one- fourth that of earth. If we plan to send an artificial satellite from the planet, the escape velocity will be , (escape velocity on earth $v_e=11\;km- s^{-1}$)
jeemain
eamcet
physics
2007
q11
asked
Oct 22, 2013
by
meena.p
1
answer
If $\tan\alpha=\large\frac{p}{q}$ where $\alpha=6\beta$ .$\alpha$ being acute angle,then $\large\frac{1}{2}$$[p\; \mathrm{ cosec} 2\beta-q\sec 2\beta]$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q11
trignometric-equations
difficult
asked
Oct 18, 2013
by
sreemathi.v
1
answer
If $\large\frac{x^2+x+1}{x^2+2x+1}$$=A+\large\frac{B}{x+1}+\frac{C}{(x+1)^2}$ then $A-B=$
jeemain
eamcet
math
2008
q11
asked
Oct 16, 2013
by
meena.p
1
answer
Identify the correct combination of characters found in Solanum
eamcet
jeemain
biology
2012
q11
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
If $\sin\alpha+\sin\beta=\alpha$ and $\cos\alpha+\cos\beta=b$ then $\sin(\alpha+\beta)$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q11
trignometric-equations
medium
asked
Oct 14, 2013
by
sreemathi.v
1
answer
The roots of $(x-a)(x-a-1)+(x-a-1)(x-a-2)+(x-a)(x-a-2)=0,a \in R$ are always:
jeemain
eamcet
math
2009
q11
asked
Oct 9, 2013
by
meena.p
1
answer
In $\sin x=-\cos^2x$ then $\cos^2x(1+\cos^2x)$ equals
jeemain
math
class11
ch2
trigonometric-functions
q11
trignometric-identities
easy
asked
Oct 7, 2013
by
sreemathi.v
1
answer
A steel wire of uniform cross- sectional area $2\;mm^2$ in heated upto $50^{\circ}C$ and is stretched by clamping its two ends rigidly. The change in tension when the temperature falls from $50^{\circ}C$ to $30^{\circ}C$ is $( \alpha =1.1 \times 10^{-5} C)\;(Y=2.0 \times 10^{11} N/ m^2)$
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q11
medium
asked
Oct 3, 2013
by
meena.p
1
answer
Study the following lists
jeemain
eamcet
biology
2013
q11
asked
Oct 2, 2013
by
thanvigandhi_1
1
answer
For $x \in R$, the least value of $\large\frac{x^2-6x+5}{x^2+2x+1}$ is :
jeemain
eamcet
math
2010
q11
asked
Sep 26, 2013
by
meena.p
1
answer
$\large\int \bigg(\sqrt {\large\frac{a+x}{a-x}}+\sqrt {\large\frac{a-x}{a+x}}\bigg)$$dx= $
jeemain
eamcet
math
2011
q11
asked
Sep 20, 2013
by
meena.p
1
answer
If the harmonic mean between the roots of $(5+ \sqrt 2)x^2-bx+(8+ 2\sqrt 5)=0$ is $4$, then the value of b
jeemain
eamcet
math
2013
q11
asked
Sep 13, 2013
by
meena.p
1
answer
When 2 balls are drawn from bag containing 2 white,4 red and 6 black balls, the chance for both of them to be red is ............... .
jeemain
eamcet
math
1991
fitb
q11
asked
Sep 13, 2013
by
meena.p
1
answer
The locus represented by $|z-1|=|z+i|$ is :
jeemain
eamcet
math
1991
q11
asked
Sep 13, 2013
by
meena.p
1
answer
The relative lowering of vapour pressure is equal to:
jeemain
eamcet
chemistry
1991
q11
asked
Sep 11, 2013
by
meena.p
1
answer
A double convex lens of $\mathit{f}\;=6$ cm is made of glass of refractive index $1.5$. The radius of curvature of the surface which is doubled that of other surface will be ................... cm.
jeemain
eamcet
physics
1991
fitb
q11
asked
Sep 11, 2013
by
meena.p
0
answers
A wooden block is dropped from the top of a cliff 100 m high. Simultaneously a bullet of mass 10 g is fired from the foot of the cliff upwards with a velocity of 100 m/s. The bullet and wooden block will meet each other after a time
jeemain
eamcet
physics
1991
q11
asked
Sep 10, 2013
by
meena.p
1
answer
Refer to the below image :
jeemain
chemistry
unit22
organic-chemistry
halogens
q11
medium
asked
Aug 26, 2013
by
sreemathi.v
1
answer
Predict the product
jeemain
chemistry
unit22
organic-chemistry
halogens
q11
easy
asked
Aug 22, 2013
by
sreemathi.v
1
answer
For a planet moving aroung the sun in an elliptical orbit, which of the following quantities remain constant?
jeemain
physics
class11
unit6
gravitation
q11
easy
asked
Aug 9, 2013
by
meena.p
1
answer
A body of mass $4 kg$ is at rest on a horizontal table. The coefficient of friction between body and table is 0.3 . Find the acceleration of the body if a horizontal force applied on the body is 20 N
jeemain
physics
class11
unit3
laws-of-motion
q11
medium
asked
Jul 4, 2013
by
meena.p
1
answer
A fair die is rolled. Consider events E = {1,3,5}, F = {2,3} and G = {2,3,4,5}. Calculate $ P \large ( \large \frac{ E \cup F}{G})$ and $ P \large ( \large \frac{ E \cap F}{G})$
class12
cbse
bookproblem
ch13
sec1
q11
p539
q11-3
sec-a
easy
math
asked
Jun 18, 2013
by
balaji.thirumalai
1
answer
A fair die is rolled. Consider events E = {1,3,5}, F = {2,3} and G = {2,3,4,5}. Calculate P(E/G) and P(G/E).
cbse
class12
bookproblem
ch13
sec1
p539
q11
easy
q11-2
sec-a
math
asked
Jun 18, 2013
by
balaji.thirumalai
1
answer
A fair die is rolled. Consider events E = {1,3,5}, F = {2,3} and G = {2,3,4,5}. Find P(E|F) and P (F|E),
cbse
class12
ch13
bookproblem
sec1
p539
q11
q11-1
sec-a
easy
math
asked
Jun 18, 2013
by
balaji.thirumalai
1
answer
The angle between the curve $y=e^{mx}$ and $y=e^{-mx}$ for $m>1 $ is
tnstate
class12
bookproblem
p230
objective
q11
asked
May 15, 2013
by
poojasapani_1
1
answer
If $A$ is a matrix of order $3$, then det($kA$)
tnstate
class12
bookproblem
p264
objective
q11
modelpaper
oct-2006
oct-2007
jun-2009
asked
May 7, 2013
by
poojasapani_1
1
answer
If the curve $ y^{2}=x$ and $xy=k$ are orthogonal than prove that $8k^{2}=1.$
tnstate
class12
bookproblem
ch5
sec-1
exercise5-2
p18
q11
modelpaper
mar-2009
asked
May 3, 2013
by
poojasapani_1
1
answer
Find the volume of the solid that results when the region enclosed by the given curve: $(11$$to14)$$y=1+x^{2},x=1,x=2,y=0$ is revolved around the $x$- axis.
tnstate
class12
bookproblem
ch7
sec-1
exercise7-4
p117
q11
asked
Apr 28, 2013
by
poojasapani_1
1
answer
Evaluate the following problems using second fundamental theorem: $\int\limits_{0}^{\large\frac{\pi}{2}} e^{3x}\cos x dx$
tnstate
class12
bookproblem
ch7
sec-1
exercise7-1
p86
q11
asked
Apr 27, 2013
by
poojasapani_1
1
answer
A psychologist had a random sample of 22 students.He grouped them into 11 pairs.In each pair,one student was taught by method A and other by method B and were examined after the completion of the course.The marks obtained by them are tabulated below :
isc
class12
modelpaper
2003
part-2
sec-c
q11
asked
Apr 22, 2013
by
sreemathi.v
0
answers
The mathematical aptitude score (MAS) of ten computer programmers with job performance rating (JPR) is given below.Calculate Spearman's rating of rank correlation and state whether those who have aptitude for maths are likely to be better programmers.
isc
class12
modelpaper
2004
part-2
sec-c
q11
asked
Apr 19, 2013
by
sreemathi.v
0
answers
Prove that $\overrightarrow{a}.(\overrightarrow{b}+\overrightarrow{c})\times (\overrightarrow{a}+2\overrightarrow{b}+3\overrightarrow{c})=[\overrightarrow{a}\;\overrightarrow{b}\;\overrightarrow{c}].$
isc
class12
modelpaper
2005
sec-b
q11
q11-b
asked
Apr 17, 2013
by
sreemathi.v
0
answers
$\overrightarrow{a}$ and $\overrightarrow{b}$ are unit vectors such that $2\overrightarrow{a}-4\overrightarrow{b}$ and $10\overrightarrow{a}+8\overrightarrow{b}$ are perpendicular to each other.Find the angle between the vectors $\overrightarrow{a}$ and $\overrightarrow{b}.$
isc
class12
modelpaper
2005
sec-b
q11
q11-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
The vectors $\hat{i}+3\hat{j},5\hat{k}$ and $\lambda\hat{i}-\hat{j}$ are coplanar.Find the value of $\lambda$.
isc
class12
modelpaper
2006
sec-b
q11
q11-b
asked
Apr 17, 2013
by
sreemathi.v
0
answers
The vectors $-2\hat{i}+4\hat{j}+4\hat{k}$ and $-4\hat{i}-2\hat{k}$ represent the diagonals BD and AC of a parallelogram ABCD.Find the area of the parallelogram.
isc
class12
modelpaper
2006
sec-b
q11
q11-a
asked
Apr 17, 2013
by
sreemathi.v
0
answers
Solve the following differential equation;$(D^{2}-1)$$y=\cos$$2x-2\sin$$2x$
tnstate
class12
bookproblem
ch8
sec-1
exercise8-5
p150
q11
modelpaper
mar-2007
oct-2008
jun-2009
asked
Apr 16, 2013
by
poojasapani_1
1
answer
Find a unit vector perpendicular to the vectors $4i+3j+k$ and $2i-j+2k$.Determine the sine angle between these two vectors.
isc
class12
modelpaper
2007
sec-b
q11
q11-b
asked
Apr 16, 2013
by
sreemathi.v
0
answers
If $\overrightarrow{a},\overrightarrow{b},\overrightarrow{c}$ are three vectors,show that : $(\overrightarrow{a}+\overrightarrow{b}).\{(\overrightarrow{b}+\overrightarrow{c})\times (\overrightarrow{c}+\overrightarrow{a})\}=2[\overrightarrow{a}\; \overrightarrow{b}\;\overrightarrow{c}]$
isc
class12
modelpaper
2007
sec-b
q11
q11-a
asked
Apr 16, 2013
by
sreemathi.v
0
answers
Coded monthly sales figures of a particular brand of T.V. for 18 months commencing January 1,2005 are as follows :
isc
class12
modelpaper
2008
sec-b
q11
q11-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
A small industrial concern used three raw materials A,B and C in its manufacturing process.The prices of the materials was as shown below :
isc
class12
modelpaper
2008
sec-b
q11
q11-a
asked
Apr 15, 2013
by
sreemathi.v
0
answers
(i) Prove by vector method that the diameter of a circle will subtend a right angle at a point on its circumference.(ii) If $\overrightarrow {a},\overrightarrow {b}$ and $\overrightarrow {c}$ represent the position vectors of the points with co-ordinates $(2,-10,2),(3,1,2)$ and $(2,1,3)$ respectively,find the value of $\overrightarrow {a}\times (\overrightarrow {b}\times \overrightarrow {c})$.
isc
class12
modelpaper
2009
sec-b
q11
q11-b
asked
Apr 15, 2013
by
sreemathi.v
0
answers
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