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JEEMAIN and NEET
JEEMAIN and NEET
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Find the equation of circle passing through (1,1) and the point of intersection of the circles $x^2+y^2+10x-y=0$ and $2x^2+2y^2+2x-5y-23=0$
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q153
difficult
asked
Feb 12, 2014
by
sreemathi.v
1
answer
Find the length of common chord of the two circles $(x-p)^2+(y-q)^2=c^2$ and $(x-q)^2+(y-p)^2=c^2$.
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q152
difficult
asked
Feb 12, 2014
by
sreemathi.v
1
answer
Calculate the weight of $CH_4$ in a 9 litre cylinder at 16 atm and $27^{\large\circ}$ (R = 0.08 litre atm $K^{-1}$)
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q4
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Calculate the temperature at which 28g $N_2$ occupies a volume of 10 litres at 2.46 atm.
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q3
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Calculate the volume occupied by 7g $N_2$ at $27^{\large\circ}$ and 750mm of Hg.
jeemain
chemistry
physical-chemistry
class11
unit5
states-of-matter
ideal-gas-equation
easy
q2
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
An iron cylinder contains helium at a pressure of 250 Kpa at 300K. The cylinder can withstand a pressure of $1\times10^6 Pa$ . The room in which cylinder is placed catches fire. Predict whether the cylinder will blow up before it melts or not . melting point of cylinder = 1800K
jeemain
chemistry
physical-chemistry
class11
unit4
states-of-matter
ideal-gas-equation
easy
q1
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Find maximum angle that can be made in glass medium $(\mu =1.5)$ if a light ray is refracted from glass to vacuum.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Find lateral shift of light ray while is passes through a parallel glass slab of thickness 10 cm placed in air.The angle of incidence in air is $60^{\circ}$ and angle of refraction in glass is $45^{\circ}$
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
A layer of oil 3 cm thick is floating on a layer of colored water 5 cm thick refractive index of colored water is $\large\frac{5}{3}$ and apparent depth of two liquids appears to be $\large\frac{36}{7}$cm. Then refractive index of oil:
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Find the locus of a middle point of a system of parallel chords of a circle $x^2+y^2=a^2$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q151
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Find the locus of the point of intersection of two perpendicular tangents to a given circle $x^2+y^2=a^2$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q150
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
A fish in an aquarium approaches the left wall at a rate of $2.5 \;m/s$ observes a fly approaching it at $8 m/s$ If the refractive index of water is $(4/3)$ . Then the actual velocity of fly is
jeemain
physics
class12
ray-optics-and-optical-instruments
refraction
difficult
asked
Feb 11, 2014
by
meena.p
1
answer
Find the equation of tangents from the point A(3,2) to the circle $x^2+y^2+4x+6y+8=0$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q149
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Refractive index of glass with respect to water is $1.125$ . If the absolute refractive index of glass is $1.5 $ find the absolute refractive index of water.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Find the equation of chord of contact of tangent drawn from a point $(x_1,y_1)$ to the circle $x^2+y^2=a^2$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q148
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
A ray of light is incident on a transparent glass slab of refractive index $1.62$ . If the reflected and refracted rays are mutually perpendiculars, what is angle of incidence?
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
medium
asked
Feb 11, 2014
by
meena.p
1
answer
Find the area of triangle formed by the tangents (4,3) to the circle $x^2+y^2=9$ and the line segment joining their point of contact?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q147
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Find the length of tangents drawn from the point (4,5) to the circle $x^2+y^2+3x-2y-11=0$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q146
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Light is incident formals on as oil at an incident angle of $30^{\circ}$ After moving through the oil -1, oil-2, and glass it exters water . If the refraction index of glass and water are 1.5 and 1.3 respectively . Then the angle which the ray makes with normal in water .
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
medium
asked
Feb 11, 2014
by
meena.p
1
answer
Find speed of light in medium 'a' if speed of light in medium 'b' is $\large\frac{c}{3}$ where $c=$ Speed of light in vaccum and light refracts from medium 'a' to medium 'b' making $45^{\circ}$ and $60^{\circ}$ respective with normal.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Find the equation of the circle(s) which touches the axes and whose centre lies on the line $2x-y=3$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q145
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Find angle $\theta_a$ made by light ray when it gets refracted from water to air as shown .
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
easy
asked
Feb 11, 2014
by
meena.p
1
answer
Find the equation of the circumcircle of the quadilateral formed by the four lines $x+y\pm1=0$ and $x-y\pm 1=0$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q144
difficult
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Find the position of a point (2,3) with respect to circle $x^2+y^2+4x+4y+4=0$
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q143
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
A light ray is incident on a glass sphere at angle of incidence $60^{\circ}$ as shown. then the total deviation after two refraction is :
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
refraction
medium
asked
Feb 11, 2014
by
meena.p
1
answer
Find the shortest and largest distance from the point (2,-7) to the circle $x^2+y^2-14x-10y-151=0$.
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q142
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
If two tangents are drawn from a point on the circle $x^2+y^2=36$ to the circle $x^2+y^2=18$ then find the angle between the tangents.
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q141
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
A person looks in to a spherical mirror . The size of image of his face is twice the actual size of his face. If the face is at distance 20 cm then find the radius of curvature of mirror.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 11, 2014
by
meena.p
2
answers
The density of $3M$ solution of $Na_2S_2O_3$ is $1.25$ $g mL^{−1}$. Calculate the mole fraction of $Na_2S_2O_3$.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q200
medium
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Find the torque due to an external uniform electric field on a dipole of dipole moment $\;\overrightarrow{P}$
jeemain
physics
class12
ch1
electrostatics
electric-charges-and-fields
electric-flux-and-dipole
medium
asked
Feb 11, 2014
by
yamini.v
1
answer
Find the parametric form of normal for the circle $x^2+y^2=a^2$
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q140
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
An extended objected is placed perpendicular to principal axis of a concave mirror of radius of curvature 20 cm at a distance of 15 cm from pole. Find the lateral magnification produced
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
easy
asked
Feb 11, 2014
by
meena.p
1
answer
The density of 3M solution of $Na_2S_2O_3$ is 1.25 g $mL^{-1}$ Calculate the $\%$ by weight of $Na_2S_2O_3$.
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q199
medium
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
The maximum area of the triangle formed by the circle $x^2+y^2=a^2$ with two of its vertices are diametrically opposite points is?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q139
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
$HNO_3$ used as a reagent has specific gravity of $1.42 mL^{-1}$ and contains $70\%$ by strength $HNO_3$. Calculate Volume of water required to make $1\;N$ solution from $2\; mL$ concentrated $HNO_3?\;(\text{Normality}_{HNO_3} = 15.78)$
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q197
medium
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
For the equation $(x-2)^2+(y-2)^2=4$ find the equation of tangent at $(2,4)$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q138
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
An isolated conducting sphere whose radius $\;R=1 m \;$ has a charge $\;q=\large\frac{1}{9}\; \mu C\;$ .The energy density at the surface of the sphere is
jeemain
physics
class12
ch2
electrostatics
electrostatic-potential-and-capacitance
electrostatics-of-conductors
medium
asked
Feb 11, 2014
by
yamini.v
1
answer
$HNO_3$ used as a reagent has specific gravity of $1.42 mL^{-1}$ and contains $70\%$ by strength $HNO_3$. Calculate Volume of acid that contains 63g pure acid.
sat
chemistry
stoichiometry and the mole concept
jeemain
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q197
easy
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Find the equation of normal to the circle $(x-2)^2+(y-2)^2=4$ at $(2,4)$ ?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q137
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
$HNO_3$ used as a reagent has specific gravity of $1.42 mL^{-1}$ and contains $70\%$ by strength $HNO_3$. Calculate Normality of acid
jeemain
chemistry
physical-chemistry
class11
unit1
some-basic-concepts-in-chemistry
stoichiometry
q96
easy
asked
Feb 11, 2014
by
sharmaaparna1
1
answer
Find the equation of normal for the circle, $x^2+y^2+2gx+2fy+c=0$ at $(x_1,y_1)$
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q136
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Find the equation of tangent at the point $p(x_1,y_1)$ to a circle $x^2+y^2+2gx+2fy+c=0$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q135
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
If a luminous point is moving at a speed $V_0$ towards spherical mirror of focal length f along its axis, Find the speed of image.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
difficult
asked
Feb 11, 2014
by
meena.p
1
answer
Discuss the position of the points (2,3) and(1,3) with respect to circle $x^2+y^2-4x+2y-11=0$?
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q134
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
A thin rod of length $\large\frac{f}{3}$ is placed along optical axis a concave mirror of focal length f such that its image which is real and elongated just touches rod . calculate the magnification.
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
difficult
asked
Feb 11, 2014
by
meena.p
1
answer
The electrostatic potential due to the charge configuration at point P as shown in figure is $\;(b < < a)$
jeemain
physics
class12
ch2
electrostatics
electrostatic-potential-and-capacitance
electrostatic-potential-energy-of-a-system-of-charges
medium
asked
Feb 11, 2014
by
yamini.v
1
answer
The abscissac of two points A and B are the roots of the equation $x^2+2ax-b^2=0$ and their ordinates are the roots of the equation $x^2+2px-q^2=0$.Find the equation and the radius of the circle with AB as diameter.
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q133
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
An object of length $2.5\;cm$ is placed at a $1.5\; f$ from a concave mirror where f is magnitude of focal length of mirror. The length of object is perpendicular to principal axis . Then which of following will be correct . (i) image is 5 cm long (ii) image is 10 cm long (iii) image is inverted (iv)image is erect
jeemain
physics
class12
unit16
ray-optics-and-optical-instruments
reflection-by-mirrors
medium
asked
Feb 11, 2014
by
meena.p
1
answer
Find the length of the intercept on the straight line $4x-3y-10=0$ by the circle $x^2+y^2-2x+4y-20=0$
jeemain
math
class11
coordinate-geometry-conic -sections
circle
ch11
q132
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
Equation of tangent of circle whose centre is (0,0) at a point (2,2) which lie on circle?
jeemain
math
class11
coordinate-geometry-conic-sections
circle
ch11
q131
medium
asked
Feb 11, 2014
by
sreemathi.v
1
answer
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