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Recent questions tagged q113
Questions
Average velocity of the molecules of a gas in a container moving in one dimension is
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
kinetic-molecular-theory-of-gases
medium
q113
asked
Mar 2, 2014
by
sharmaaparna1
1
answer
Which of the following statements are correct ?
jeemain
chemistry
class11
organic-chemistry
q113
difficult
basic-organic-chemistry
ch12
asked
Feb 28, 2014
by
meena.p
1
answer
The fries rearrangement of the below reaction ,the P is
jeemain
chemistry
unit11
unit12
class12
organic-chemistry
oxygen
phenols
q113
easy
asked
Feb 27, 2014
by
sreemathi.v
1
answer
Let $ \varepsilon_0$ denote the dimensional formula of the permittivity of vacuum. If M = mass, L = length and T = time and A = electric current then,
jeemain
physics
electrostatics
electric-charges-and-fields
cbse
class12
ch3
q113
difficult
asked
Feb 15, 2014
by
thanvigandhi_1
1
answer
For the equation to represent the hyperbola $\large\frac{x^2}{9-\lambda}+\frac{y^2}{6-\lambda}$$=1$ what should be the value of $\lambda$?
jeemain
math
class11
coordinate-geometry-conic -sections
hyperbola
ch11
q113
medium
asked
Feb 10, 2014
by
sreemathi.v
1
answer
Sum of series $(n)(n)$ + $(n-1)(n+1)$ + $(n-2)(n+2)$ +....+ $1\;(2n-1)$ is
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q113
asked
Jan 20, 2014
by
yamini.v
1
answer
A stationary $He^+$ ion emitted a photon corresponding to the first line $(H_{\alpha})$ of the Lyman series .That photon liberated a photo electron from a stationary H atom in ground state.What is the velocity of photo electron?$R_H=109678cm^{-1}$
jeemain
chemistry
physical-chemistry
class11
unit2
atomic-structure
bhor's-model
q113
difficult
asked
Jan 16, 2014
by
sreemathi.v
1
answer
If $\overrightarrow a=2\hat i+\hat j-2\hat k\:\;and\:\:\overrightarrow b=\hat i+\hat j$ and $\overrightarrow c$ is such that $\overrightarrow c.\overrightarrow a=|\overrightarrow c|$, $|\overrightarrow c-\overrightarrow a|=2\sqrt 2$ and the angle between $\overrightarrow a\times\overrightarrow b$ and $\overrightarrow c$ is $30^{\circ}$, then $|(\overrightarrow a\times\overrightarrow b)\times\overrightarrow c|=?$
jeemain
math
class12
ch10
vector-algebra
medium
vector-product
q113
asked
Jan 7, 2014
by
rvidyagovindarajan_1
1
answer
Let $f:R\rightarrow R$ be a function defined by $f(x)=min\{x+1,\mid x\mid+1\}$. Then which of the following is true ?
jeemain
math
ch5
continuity-and-differentiability
differentiability
medium
q113
asked
Dec 31, 2013
by
sreemathi.v
1
answer
Integrate : $\int a ^{\log ax}. \sin b dx $
jeemain
math
class12
ch7
integral-calculus
integration-by-subsitution
easy
q113
asked
Dec 20, 2013
by
meena.p
1
answer
Polysome is formed by :
aipmt
modelpaper
biology
2008
q113
asked
Dec 18, 2013
by
thanvigandhi_1
2
answers
For a thermocouple the temperature of cold junction $(T_c)$ neutral temperature $(T_n) $ and temperature of inversion $(T_i)$ are $ 0^{\circ}C, 285^{\circ}C\: and \: 585^{\circ}C$ respectively. If the temperature of cold junction is raised to $ 10^{\circ}C$ then :
jeemain
eamcet
physics
2010
q113
asked
Nov 18, 2013
by
thanvigandhi_1
1
answer
In the thermocouple, cold junction is at $0^{\circ}C$, hot junction is at $t^{\circ}C$. The graph drawn between thermo - emf (E) and temperature of the hot junction (t) is represented by the equation , $E=at+bt^2$. If $ a = -224b$ the neutral and the inversion temperatures of the thermocouple respectively, in degree celsius are :
jeemain
eamcet
physics
2011
q113
asked
Nov 4, 2013
by
thanvigandhi_1
1
answer
A certain particle has a half life of 60 seconds. The fractions of the particles that will decay at the end of 10 seconds is
jeemain
eamcet
physics
2012
q113
asked
Oct 20, 2013
by
thanvigandhi_1
1
answer
A copper constantan thermocouple produces an e.m.f of $40\;\mu V$ per $^{\circ}C$. The smallest temperature difference that can be measured with this thermocouple is $42.5 ^{\circ}C$, When a galvanometer capable of detecting as low as $10^{-6}\;amp$ is employed. The resistances of that galvanometer is
jeemain
eamcet
physics
2008
q113
asked
Oct 20, 2013
by
meena.p
1
answer
The work function of a certain metal is $3.31 \times 10^{-19}\;J$. Then the maximum kinetic energy of photo electrons emitted by radiation of wavelength 5000 A is : (given $h=6.62 \times 10^{-34}\;J-s, C= 3 \times 10^{8}ms^{-1},e= 1.6 \times 10^{-19}$ coul.)
jeemain
eamcet
physics
2009
q113
asked
Oct 14, 2013
by
meena.p
1
answer
A $U^{235}$ reactor generates power at a rate of P producing $ 2 \times 10^{18}$ fissions per second. The energy released per fission is 185 MeV. The value of P is
jeemain
eamcet
physics
2013
q113
asked
Oct 12, 2013
by
thanvigandhi_1
1
answer
The thermo e.m.f of a thermo-couple is given by , $\xi =a T +bT^2,$ where $a/b=-200^{\circ}C$. If the cold function is kept at $30^{\circ}$, then the inversion temperature is ($ \xi$ in volts, T is in centigrade):
jeemain
eamcet
physics
2010
q113
asked
Sep 30, 2013
by
meena.p
1
answer
A fully charged capacitor has a capacitance $'C'$. It is discharged through a small coil resistance wire, embedded in a block of specific heat $'s'$ and mass $'m'$ under thermally isolated conditions. If the temperature of the block is raised by $'\Delta T$, the potential difference $V$ across the capacitor initially is :
jeemain
eamcet
physics
2011
q113
asked
Sep 24, 2013
by
meena.p
1
answer
A series $LCR$ circuit is connected across a source of alternating emf of changing frequency and resonates at frequency $f_0$. Keeping capacitance constant, if the inductance (L) is increased by $\sqrt 3$ times and resistance is increased (R) by 1.4 times, the resonant frequency now is
jeemain
eamcet
physics
2013
q113
asked
Sep 18, 2013
by
meena.p
1
answer
Which of the following is not a binary operation on $R$
tnstate
class12
bookproblem
p240
objective
q113
modelpaper
oct-2007
jun-2008
jun-2009
mar-2010
asked
May 24, 2013
by
poojasapani_1
1
answer
The locus of the point of intersection of perpendicular tangents to the hyperbola $\large\frac{x^{2}}{16}-\frac{y^{2}}{9}$=$1$ is
tnstate
class12
bookproblem
p276
objective
q113
modelpaper
oct-2008
asked
May 14, 2013
by
poojasapani_1
1
answer
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