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Recent questions tagged q39
Questions
Which of the following is not correct?
jeemain
eamcet
chemistry
2007
q39
asked
Oct 24, 2013
by
meena.p
1
answer
In Sun, the important source of energy is
jeemain
eamcet
physics
2007
q39
asked
Oct 23, 2013
by
meena.p
1
answer
Let $\bar a$ be a unit vector, $\bar b= 2 \bar i+\bar j- \bar k$ and $\bar c= \bar i +3 \bar k$. The maximum value of $[\bar a\;\bar b\;\bar c]$ is
jeemain
eamcet
math
2008
q39
asked
Oct 17, 2013
by
meena.p
1
answer
Study the following lists
jeemain
eamcet
biology
2012
q39
asked
Oct 16, 2013
by
thanvigandhi_1
1
answer
Simplify : $\large\frac{\sin\big(\Large\frac{3\pi}{2}-\theta\big)\cos\big(\Large\frac{\pi}{2}+\theta\big)}{\tan\big(\Large\frac{\pi}{2}+\theta\big)}-\frac{\sin\big(\Large\frac{3\pi}{2}-\theta\big)}{\sec\big(\pi+\theta\big)}$
jeemain
math
class11
ch3
trigonometric-functions
q39
trignometric-equations
medium
asked
Oct 16, 2013
by
sreemathi.v
1
answer
Suppose that $E_1$ and $E_2$ are two events of a random experiment such that $P(E_1)=\large\frac{1}{4},$$ P(E_2/E_1)=\large\frac{1}{4},$ Observe the lists given below:
jeemain
eamcet
math
2009
q39
asked
Oct 9, 2013
by
meena.p
1
answer
If $\cos(\theta-\alpha)=a$ and $\sin(\theta-\beta)=b$ then $\cos^2(\alpha-\beta)+2ab\sin(\alpha-\beta)$ is equal to
jeemain
math
class11
ch3
trigonometric-functions
q39
trignometric-identities
easy
asked
Oct 8, 2013
by
sreemathi.v
1
answer
If $\rho$ is density of the material of a wire and $\sigma$ is the breaking stress. The greatest length of wire that can hang freely without breaking is
jeemain
physics
class11
unit7
properties-of-solids-and-fluids
q39
medium
asked
Oct 7, 2013
by
meena.p
1
answer
Study the following lists
jeemain
eamcet
biology
2013
q39
asked
Oct 4, 2013
by
thanvigandhi_1
1
answer
Suppose A and B are two events such that $P(A \cap B)=\large\frac{3}{25}$ and $P(B-A)=\large\frac{8}{25}$. Then $ P(B)=$
jeemain
eamcet
math
2010
q39
asked
Sep 27, 2013
by
meena.p
1
answer
$\large\frac{(1+i)^{2011}}{(1-i)^{2009}}=$
jeemain
eamcet
math
2011
q39
asked
Sep 20, 2013
by
meena.p
1
answer
A bag contains $2n+1$ coins. It is known that $n$ of these coins have a head on both sides. Whereas the remaining $n+1$ coins are fair. A coins is picked up at random from the bag and tossed. If the probability that the toss results in a head is $\large\frac{31}{42}.$ then $n$=
jeemain
eamcet
math
2013
q39
asked
Sep 16, 2013
by
meena.p
1
answer
The normal boiling point of, $CS_2,H_2O$ and $CCl_4$ are $41.3^{\circ}C,100^{\circ}C$ and $77^{\circ}C$ respectively. The liquid in which the inter molecular forces are the weakest is ................ .
jeemain
eamcet
chemistry
1991
fitb
q39
asked
Sep 12, 2013
by
meena.p
0
answers
A satellite of mass m moves along an elliptical path around the earth. The areal velocity of satellite is proportional to
jeemain
physics
class11
unit6
gravitation
q39
medium
asked
Aug 21, 2013
by
meena.p
1
answer
A man throws the brick to a height of 12 m with a speed of 12 m/s. If he throws the brick in such a way that they just reach that height , what percentage of energy will be saved
jeemain
physics
class11
unit4
work-power-energy
q39
difficult
asked
Jul 20, 2013
by
meena.p
1
answer
Two beads A and B move along a semicircular wire frame as shown. The beads are connected by an inelastic string which always remains tight. At an instant the speed of A is $u$ . $ \angle BAC=45^{\circ}$ and angle $BOC=75 ^{\circ}$ where O is center of the semicircular arc. The speed of bead B at that instant is
jeemain
physics
class11
unit3
laws-of-motion
q39
difficult
asked
Jul 9, 2013
by
meena.p
1
answer
The caesium clock are capable of measuring time with an accuracy of $1$ part in $10^{11}$. If two such clock run for $100$ years, find the difference in time shown by the clock
jeemain
physics
class11
ch2
units-and-measurement
q39
medium
accuracy-precision-and-errors-in-measurement
asked
Jun 18, 2013
by
meena.p
1
answer
The least possible perimeter of a rectangle of area $100m^{2}$ is
tnstate
class12
bookproblem
p233
objective
q39
modelpaper
oct-2007
oct-2008
asked
May 18, 2013
by
poojasapani_1
1
answer
The vector $(\overrightarrow{a}\times\overrightarrow{b})\times(\overrightarrow{c}\times\overrightarrow{d}) $is
tnstate
class12
bookproblem
p268
objective
q39
asked
May 10, 2013
by
poojasapani_1
1
answer
Find the mean and variance of number of sines in two tosses of a die.
cbse
class12
additionalproblem
kvquestionbank2012
ch13
q39
p43
math
asked
Feb 5, 2013
by
meena.p
0
answers
Evaluate:\[\int \sqrt {\frac {a-x}{a+x}}dx\]
cbse
class12
additionalproblem
kvquestionbank2012
ch7
q39
p26
math
asked
Feb 2, 2013
by
meena.p
0
answers
Show that the semi vertical angle of a right circular cone of given total surface area and maximum volume is $\sin^{-1} \frac{1}{3}$
cbse
class12
additionalproblem
kvquestionbank2012
ch6
q39
p18
math
asked
Jan 29, 2013
by
meena.p
0
answers
Find $\Large\frac{dy}{dx}$when$y=\tan^{-1}\bigg[\Large\frac{x^{\frac{1}{3}}+a^{\frac{1}{3}}}{1-x^{\frac{1}{3}}a^{\frac{1}{3}}}\bigg]$
cbse
class12
additionalproblem
kvquestionbank2012
ch5
q39
p14
easy
math
sec-a
asked
Jan 28, 2013
by
meena.p
1
answer
If $ A+B+C=\large\pi,\;\normalsize show\;that\;\begin{vmatrix} \sin (A+B+C) & \sin B & \cos C \\ -\sin B & 0 & \tan A \\ \cos (A+B) & -\tan A & 0 \end{vmatrix}=0$
cbse
class12
additionalproblem
kvquestionbank2012
ch3
q39
p9
math
sec-b
asked
Jan 24, 2013
by
meena.p
0
answers
Solution of differential equation $x dy-y dx=0$ represents:
cbse
class12
ch9
sec-a
q39
p196
objective
exemplar
easy
math
asked
Jan 18, 2013
by
sreemathi.v
1
answer
If ${\mid\overrightarrow{a}\times\overrightarrow{b}\mid}^2$=${\mid\overrightarrow{a}.\overrightarrow{b}\mid}^2=144$ and$\mid\overrightarrow{a}\mid=4,$ then $\mid\overrightarrow{b}\mid$ is equal to ________.
cbse
class12
ch10
q39
p219
exemplar
medium
sec-b
math
asked
Jan 17, 2013
by
sreemathi.v
1
answer
Evaluate the following: $\int e^{\tan^{-1}x}\bigg(\frac{1+x+x^2}{1+x^2}\bigg)dx$
cbse
class12
ch7
q39
p166
exemplar
sec-b
difficult
math
asked
Jan 14, 2013
by
sreemathi.v
1
answer
If the curve $ay+x^2=7$ and $x^3=y,$ cut orthogonally at $(1,1)$ then the value of a is
cbse
class12
ch6
q39
p139
objective
exemplar
easy
sec-a
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
Two dice are tossed.Find whether the following two events A and B are independent.\[A=(x,y):x+y=11\quad B=(x,y):x=5\]where (x,y) denotes a typical sample point.
cbse
class12
ch13
q39
p276
short-answer
exemplar
sec-a
easy
math
asked
Jan 9, 2013
by
sreemathi.v
1
answer
A feasible region of a system of linear inequalities is said to be _________ if it can be enclosed with in a circle.
cbse
class12
ch12
q39
p257
fitb
exemplar
sec-a
easy
math
asked
Jan 8, 2013
by
sreemathi.v
1
answer
The vector equation of the line $\Large \frac{x-5}{3}\;\frac{y-4}{7}\;\frac{z-6}{2}$ is _______________.
cbse
class12
ch11
q39
p239
fitb
exemplar
easy
sec-a
math
asked
Jan 4, 2013
by
sreemathi.v
1
answer
Differentiate the following w.r.t x:$\tan^{-1}(\sec x+\tan x),\large \frac{-\pi}{2}<$$x<\large\frac{\pi}{2}$.
cbse
class12
ch5
q39
p110
short-answer
exemplar
sec-a
easy
math
asked
Dec 31, 2012
by
sreemathi.v
1
answer
If A is invertible matrix of order $3\times 3$,then $| A^{-1} |$___________.
cbse
class12
ch4
sec-a
q39
p83
fitb
exemplar
easy
math
asked
Dec 27, 2012
by
sreemathi.v
1
answer
If $A=\begin{bmatrix}1 & 5\\7 & 12\end{bmatrix}\;and\;B=\begin{bmatrix}9 & 1\\7 & 8\end{bmatrix},$ find a matrix $C$ such that $3A+5B+2C$ is a null matrix.
cbse
class12
ch3
q39
p57
short-answer
exemplar
sec-a
easy
math
asked
Dec 23, 2012
by
sreemathi.v
1
answer
The value of $\sin^{-1}\bigg(\sin\frac{3\pi}{5}\bigg)$ is ________________.
cbse
class12
ch2
q39
p40
fitb
exemplar
easy
sec-a
math
asked
Dec 21, 2012
by
sreemathi.v
1
answer
Which of the following functions from Z into Z are bijections?\begin{array}{1 1}(A)\;f(x)=x^3 & (B)\;f(x)=x+2\\(C)\;f(x)=2x+1 & (D)\;f(x)=x^2+1\end{array}
cbse
class12
ch1
q39
p15
objective
exemplar
math
sec-a
asked
Dec 19, 2012
by
sreemathi.v
1
answer
Choose the correct answer in $\Large \int \normalsize\frac{dx}{\sin^2x\cos^2x}$ equals
cbse
class12
bookproblem
ch7
sec2
q39
p307
easy
sec-a
math
asked
Dec 5, 2012
by
sreemathi.v
1
answer
Prove the following\[\int\limits_0^1\sin^{-1}x\;dx=\frac{\pi}{2}-1\]
cbse
class12
bookproblem
ch7
misc
q39
p353
sec-b
medium
math
asked
Dec 2, 2012
by
sreemathi.v
1
answer
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