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Recent questions tagged q30
Questions
Identify the correct pair of statements from the following
jeemain
eamcet
biology
2013
q30
asked
Oct 4, 2013
by
thanvigandhi_1
1
answer
The sum of angles of elevation of the top of tower from two points distant a and b from the base and in the same straight line with it is $90^{\circ}$. Then the height of the tower is :
jeemain
eamcet
math
2010
q30
asked
Sep 26, 2013
by
meena.p
1
answer
If $\tan A $ and $\tan B$ are the roots of the quadratic equation $x^2-px+q=0,$ then $\sin^2 (A+B)$=
jeemain
eamcet
math
2011
q30
asked
Sep 20, 2013
by
meena.p
1
answer
A person observes the top of a tower from a point A on the ground. The elevation of the tower from this point is $60^{\circ}$. He moves $60\;m$ in the direction perpendicular to the line joining A and base of the tower. The angle of elevation of the tower from this point is $45^{\circ}.$ Then the height of the tower (in meters) is
jeemain
eamcet
math
2013
q30
asked
Sep 16, 2013
by
meena.p
1
answer
$\int \large\frac{3 \cos x +2 \sin x}{4 \sin x+ 5 \cos x}$$dx$=.............. .
jeemain
eamcet
math
1991
fitb
q30
asked
Sep 13, 2013
by
meena.p
0
answers
The non-metallic element present in the mineral cryolite is ............... .
jeemain
eamcet
chemistry
1991
fitb
q30
asked
Sep 12, 2013
by
meena.p
1
answer
Material getting magnetized by orientation of atomic magnetic moment in external magnetic fields are ............. .
jeemain
eamcet
physics
1991
fitb
q30
asked
Sep 11, 2013
by
meena.p
0
answers
The feasible region for an LPP is shown in the fig.12.13.Let $F=3x-4y$ be the objective function.Maximum value of $F$ is
cbse
class12
ch12
q30
p255
objective
exemplar
sec-a
easy
math
asked
Aug 21, 2013
by
sreemathi.v
1
answer
The ratio of kinetic energy required to raise a satellite upto a height 'h' to the kinetic energy of the satellite at that height (R-radius of earth)
jeemain
physics
class11
unit6
gravitation
q30
difficult
asked
Aug 20, 2013
by
meena.p
1
answer
Hail storms are observed to strike the surface of frozen lake at $30^{\circ }$ with the vertical and rebound at $60^{\circ}$ with vertical, Assume contact to be smooth, the coefficient of restitution,
jeemain
physics
class11
unit4
work-power-energy
q30
difficult
asked
Jul 19, 2013
by
meena.p
1
answer
All surfaces are smooth in the figure. Find F such that block of mass m resting on a wedge of mass M remains stationary with respect to wedge
jeemain
physics
class11
unit3
laws-of-motion
q30
difficult
asked
Jul 8, 2013
by
meena.p
1
answer
If fundamental units of mass, length and time are each doubled, what happens to unit of energy
jeemain
physics
class11
ch2
units-and-measurement
q30
easy
dimensional-formulae-and-analysis
asked
Jun 18, 2013
by
meena.p
1
answer
The value of$'c'$ of Lagranges Mean Value Theorem for $f(x)=\sqrt{x}$ when $a=1$ and $b=4$ is
tnstate
class12
bookproblem
p232
objective
q30
asked
May 17, 2013
by
poojasapani_1
1
answer
If $\overrightarrow{PR}=2\overrightarrow{i}+\overrightarrow{j}+\overrightarrow{k}, \;\overrightarrow{QS}=-\overrightarrow{i}+\overrightarrow{3j}+\overrightarrow {2k},$ then the area of the quadrilateral $PQRS$ is
tnstate
class12
bookproblem
p266
objective
q30
modelpaper
oct-2006
oct-2007
asked
May 9, 2013
by
poojasapani_1
0
answers
A,B,C tosses a coin in turns. The first one to throw a 'head' wins game. What are their respective chances of winning.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q30
p42
math
asked
Feb 5, 2013
by
meena.p
0
answers
Evaluate:\[\int \cos^{-1}(\sin x)dx\]
cbse
class12
additionalproblem
kvquestionbank2012
ch7
q30
p26
math
asked
Feb 2, 2013
by
meena.p
0
answers
What angle is formed by the y-axis and the tangent to the parabola $ y=x^2+4x-17$ at the point $ p(5/2,-3/4)?$
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q30
p18
math
asked
Jan 29, 2013
by
meena.p
0
answers
Find $\Large\frac{dy}{dx},$ when $y=\sin^{-1}\bigg[x\sqrt{1-x}-\sqrt x \sqrt{1-x^2}\bigg]$
cbse
class12
additionalproblem
kvquestionbank2012
ch5
q30
p13
medium
math
sec-a
asked
Jan 25, 2013
by
meena.p
1
answer
Find the matrix x if $ \begin{bmatrix} 2 & 4 \\ 1 & 3 \end{bmatrix} \times \begin{bmatrix} 0 & 2 \\ 1 & 3 \end{bmatrix}=\begin{bmatrix} 1 & 6 \\ 3 & -2 \end{bmatrix}$\[X=-\frac{1}{4}\begin{bmatrix} -53 & 18 \\ 25 & -10 \end{bmatrix}\]
cbse
class12
additionalproblem
kvquestionbank2012
ch3
q30
p9
math
sec-a
asked
Jan 24, 2013
by
meena.p
0
answers
On the set N of natural numbers, define the operation * on N by m*n=gcd(m,n) for all m, n$ \varepsilon$ N. Show that * is commutative as well as associative.
cbse
class12
additionalproblem
kvquestionbank2012
ch1
q30
p4
math
sec-b
asked
Jan 23, 2013
by
meena.p
0
answers
Find the equation of the curve through the point (1,0) if the slope of the tangent to the curve at any point (x,y) is $\Large \frac{y-1}{x^2+x}.$
cbse
class12
ch9
sec-b
q30
p195
exemplar
medium
math
asked
Jan 18, 2013
by
sreemathi.v
1
answer
Projection vector of $\overrightarrow{a}$ on $\overrightarrow{b}$ is
cbse
class12
ch10
q30
p218
exemplar
easy
sec-a
math
asked
Jan 17, 2013
by
sreemathi.v
1
answer
The area of the region bounded by the curve $y=sin x$ between the ordinates $x=0$ and $x=\large\frac{\pi}{2}$ and the x-axis is
cbse
class12
ch8
q30
p178
objective
exemplar
sec-b
easy
math
asked
Jan 16, 2013
by
sreemathi.v
1
answer
Evaluate the following: $\int\limits_0^{\Large \frac{\pi}{2}}\Large \frac{\tan xdx}{1+m^2\tan^2x}$
cbse
class12
ch7
q30
p165
short-answer
exemplar
sec-b
medium
math
asked
Jan 14, 2013
by
sreemathi.v
1
answer
Find the dimentions of the rectangle of perimeter 36cm which will sweep out a volume as large as possible,when revolved about one of its sides.Also find the maximum volume.
cbse
class12
ch6
q30
p137
exemplar
sec-c
medium
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
Two probability distributions of the discrete random variable X and Y are given below.
cbse
class12
ch13
q30
p275
short-answer
exemplar
sec-a
easy
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
If the directions cosines of a line are $k,k,k$ then
cbse
class12
ch11
q30
p238
objective
exemplar
easy
sec-a
math
asked
Jan 4, 2013
by
sreemathi.v
1
answer
Differentiate the following w.r.t x: $\sin^n(ax^2+bx+c)$.
cbse
class12
ch5
q30
p109
short-answer
exemplar
sec-a
medium
math
asked
Dec 31, 2012
by
sreemathi.v
1
answer
Find the equation of the plane passing through the point (–1, 3, 2) and perpendicular to each of the planes \( x + 2y + 3z = 5\: and\: 3x + 3y + z = 0\)
cbse
modelpaper
2012
sec-b
q30
asked
Dec 29, 2012
by
thanvigandhi_1
0
answers
Let $f(t)=\begin{vmatrix}\cos t & t & 1\\2\sin t & t & 2t\\\sin t & t & t\end{vmatrix}$, then $\displaystyle \lim_{t \to 0}\Large \frac{f(t)}{t^2}$ is equal to
cbse
class12
ch4
sec-a
q30
p81
objective
exemplar
medium
math
asked
Dec 26, 2012
by
sreemathi.v
1
answer
Let A and B be the square matrices of the order $3\times 3$.Is $(AB)^2=A^2B^2?$ Give reasons
cbse
class12
ch3
q30
p56
short-answer
exemplar
easy
sec-a
math
asked
Dec 22, 2012
by
sreemathi.v
1
answer
Find the equation of the straight line passing through (1, 2, 3) and perpendicular to the plane \( x + 2y – 5z + 9 = 0\)
cbse
modelpaper
2012
sec-b
q30
asked
Dec 22, 2012
by
thanvigandhi_1
0
answers
If $\tan^{-1}x+\tan^{-1}y=\frac{4\pi}{5},then\;\cot^{-1}x+\cot^{-1}y$ equals:
cbse
class12
ch2
q30
p38
objective
exemplar
medium
sec-a
math
asked
Dec 21, 2012
by
sreemathi.v
1
answer
The maximum number of equivalence relations on the set A={1,2,3} are
cbse
class12
ch1
q30
p14
objective
exemplar
sec-b
math
asked
Dec 19, 2012
by
sreemathi.v
1
answer
Integrate the function $\frac{\sin x}{1+\cos x}$
cbse
class12
bookproblem
ch7
sec2
q30
p305
sec-b
easy
math
asked
Dec 5, 2012
by
sreemathi.v
1
answer
Evaluate the definite integrals\[\int\limits_0^\frac{\pi}{4}\frac{\sin x+\cos x}{9+16\sin 2x}\;dx\]
cbse
class12
bookproblem
ch7
misc
q30
p353
sec-b
difficult
math
asked
Dec 2, 2012
by
sreemathi.v
1
answer
Find the values of $a$ and $b$ such that the function defined by $ f(x) = \left\{ \begin{array} {1 1} 5 ,& \quad\text{ if $ x $ \(\leq 2\)}\\ ax+b,& \quad \text{if $2$ < x<10}\\ 21,& \quad \text{if $ x $ \(\geq 10\)}\\ \end{array} \right.$ is a continuous function.
cbse
class12
bookproblem
ch5
sec1
q30
p161
sec-b
medium
math
asked
Nov 11, 2012
by
thanvigandhi_1
1
answer
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