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Class 12 Physics solutions:
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Get here all the solutions of Class 12's Physics questions.
A slit of width is illuminated by white light. For red light
$(λ=6500A˚)$
, the first minima is obtained at
$θ=30_{∘}.$
Then the value of will be
The potential at a point x ( measured in
$μ$
m) due to some charges situated on the x-axis is given by
$V(x)=20/(x_{2}−4)volt$
The half-lives of radioactive sample are 30 years and 60 years for two decay processes. If the sample decays by both the processes simultaneously. The time after which, only one-fourth of the sample will remain is
Two periodic waves of intensities
$I_{1}$
and
$I_{2}$
pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is
Slide 1 of 4
A slit of width is illuminated by white light. For red light
$(λ=6500A˚)$
, the first minima is obtained at
$θ=30_{∘}.$
Then the value of will be
Slide 2 of 4
The potential at a point x ( measured in
$μ$
m) due to some charges situated on the x-axis is given by
$V(x)=20/(x_{2}−4)volt$
Slide 3 of 4
The half-lives of radioactive sample are 30 years and 60 years for two decay processes. If the sample decays by both the processes simultaneously. The time after which, only one-fourth of the sample will remain is
Slide 4 of 4
Two periodic waves of intensities
$I_{1}$
and
$I_{2}$
pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is
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Class 12 Chemistry solutions:
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Get here all the solutions of Class 12's Chemistry questions.
$[Cr(H_{2}O)_{6}]Cl_{3}$
(at no. of Cr = 24) has a magnetic moment of
$3.83B.M.$
The correct distribution of
$3d$
electrons the chromium of the complex.
An alcohol (A) on heating with concentrated
$H_{2}SO_{4}$
gives alkene (B) as major product and (B) can shown the geometrical isomerism . The compound (A) is
$:$
Which of the following pairs is isostractural (i.e having the same shape and hybridization ?
Which of the following complex does not show geometrical isomerism
Slide 1 of 4
$[Cr(H_{2}O)_{6}]Cl_{3}$
(at no. of Cr = 24) has a magnetic moment of
$3.83B.M.$
The correct distribution of
$3d$
electrons the chromium of the complex.
Slide 2 of 4
An alcohol (A) on heating with concentrated
$H_{2}SO_{4}$
gives alkene (B) as major product and (B) can shown the geometrical isomerism . The compound (A) is
$:$
Slide 3 of 4
Which of the following pairs is isostractural (i.e having the same shape and hybridization ?
Slide 4 of 4
Which of the following complex does not show geometrical isomerism
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Class 12 Math solutions:
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Get here all the solutions of Class 12's Math questions.
\displaystyle{f{{\left({x}\right)}}}={x}^{{{2}}}+{3}{x}^{{{2}}}-{33}{x}-{33}\text{for
}\ {x}\gt{0} and g be its inverse such that kg'(2)=1, then the value of k is
A line segment has length 63 and direction ratios
are
$3,−2,6.$
The components of the line vector are
A particle moves along the parabola
$y=x_{2}$
in the first quadrant in such a way that its x-coordinate (measured in metres) increases at a rate of 10 m/sec. If the angle of inclination
$θ$
of the line joining the particle to the origin change, when x = 3 m, at the rate of k rad/sec., then the value of k is
Consider a set of point R in which is at a distance of 2 units from the line
$1x =−1y−1 =2z+2 $
between the planes
$x−y+2z=3=0andx−y+2z−2=0.$
Slide 1 of 4
\displaystyle{f{{\left({x}\right)}}}={x}^{{{2}}}+{3}{x}^{{{2}}}-{33}{x}-{33}\text{for
}\ {x}\gt{0} and g be its inverse such that kg'(2)=1, then the value of k is
Slide 2 of 4
A line segment has length 63 and direction ratios
are
$3,−2,6.$
The components of the line vector are
Slide 3 of 4
A particle moves along the parabola
$y=x_{2}$
in the first quadrant in such a way that its x-coordinate (measured in metres) increases at a rate of 10 m/sec. If the angle of inclination
$θ$
of the line joining the particle to the origin change, when x = 3 m, at the rate of k rad/sec., then the value of k is
Slide 4 of 4
Consider a set of point R in which is at a distance of 2 units from the line
$1x =−1y−1 =2z+2 $
between the planes
$x−y+2z=3=0andx−y+2z−2=0.$
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Class 11 Physics solutions:
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Get here all the solutions of Class 11's Physics questions.
A bead of mass
$displaystylefrac12kg$
starts from rest from A to move in a vertical place along a smooth fixed quarter ring of radius
$displaystyle5m$
, under the action of a constant horizontal force
$displaystylef=5N$
as shown. The speed of bead as it reaches the point (B) is [Take
$displaystyleg=10ms_{−2}]$
In a carbon monoxide molecule, the carbon and the oxygen atoms are separated by a distance
$1.2×10_{−10}m$
. The distance of the centre of mass from the carbon atom is
A mass 'm' is supported by a massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall or release?
A pump motor is used to deliver water at a certain rate from a given pipe. To obtain 'n' times water from the same pipe in the same time by what amount (a) the force and (b) power of the motor should be increased ?
Slide 1 of 4
A bead of mass
$displaystylefrac12kg$
starts from rest from A to move in a vertical place along a smooth fixed quarter ring of radius
$displaystyle5m$
, under the action of a constant horizontal force
$displaystylef=5N$
as shown. The speed of bead as it reaches the point (B) is [Take
$displaystyleg=10ms_{−2}]$
Slide 2 of 4
In a carbon monoxide molecule, the carbon and the oxygen atoms are separated by a distance
$1.2×10_{−10}m$
. The distance of the centre of mass from the carbon atom is
Slide 3 of 4
A mass 'm' is supported by a massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall or release?
Slide 4 of 4
A pump motor is used to deliver water at a certain rate from a given pipe. To obtain 'n' times water from the same pipe in the same time by what amount (a) the force and (b) power of the motor should be increased ?
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Class 11 Chemistry solutions:
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Get here all the solutions of Class 11's Chemistry questions.
For two samples of ideal gases A and B curves are plotted n vs V (volume of container ) at 16.42 atm pressure. Then temperature of A and B respectively are:
The pH of which salt is independent of its concentration ?
Oxidation number of 'Co' in
$Hg[Co(SCN)_{4}]$
$2g$
of
$NaOH$
per
$250mL$
of solution is added to a buffer solution of buffer capacity
$0.2.$
Then the change in pH is
Slide 1 of 4
For two samples of ideal gases A and B curves are plotted n vs V (volume of container ) at 16.42 atm pressure. Then temperature of A and B respectively are:
Slide 2 of 4
The pH of which salt is independent of its concentration ?
Slide 3 of 4
Oxidation number of 'Co' in
$Hg[Co(SCN)_{4}]$
Slide 4 of 4
$2g$
of
$NaOH$
per
$250mL$
of solution is added to a buffer solution of buffer capacity
$0.2.$
Then the change in pH is
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Class 11 Science solutions:
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Get here all the solutions of Class 11's Science questions.
Two bodies of masses m and 4m are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zero is:
If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is
From a solid sphere of mass M and radius R, a spherical portion of radius R/2 is removed, as shown in the figure Taking gravitational potential
$V=0atr=∞$
, the potential at (G = gravitational constatn)
A mass
$m$
is placed inside a hollow sphere of mass M as shown in figure. The gravitaional force on mass
$m$
is
Slide 1 of 4
Two bodies of masses m and 4m are placed at a distance r. The gravitational potential at a point on the line joining them where the gravitational field is zero is:
Slide 2 of 4
If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth, is
Slide 3 of 4
From a solid sphere of mass M and radius R, a spherical portion of radius R/2 is removed, as shown in the figure Taking gravitational potential
$V=0atr=∞$
, the potential at (G = gravitational constatn)
Slide 4 of 4
A mass
$m$
is placed inside a hollow sphere of mass M as shown in figure. The gravitaional force on mass
$m$
is
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Previous Year JEE Main solutions:
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Get here all the previous year solutions of JEE Main questions.
Given : A circle,
$2x_{2}+2y_{2}=5$
and a parabola,
$y_{2}=45 x$
.Statement - I : An equation of a common tangent to these curves is
$y=x+5 $
Statement - II : If the line,
$y=mx+m5 (m=0)$
is their common tangent, then m satisfies
$m_{4}−3m_{2}+2=0.$
All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?
The circle passing through (1, -2) and touching the axis of x at (3, 0) also passes through the point
The x-coordinate of the incentre of the triangle that has the coordinates of mid points of its sides as (0, 1), (1, 1) and (1, 0) is
Slide 1 of 4
Given : A circle,
$2x_{2}+2y_{2}=5$
and a parabola,
$y_{2}=45 x$
.Statement - I : An equation of a common tangent to these curves is
$y=x+5 $
Statement - II : If the line,
$y=mx+m5 (m=0)$
is their common tangent, then m satisfies
$m_{4}−3m_{2}+2=0.$
Slide 2 of 4
All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given ?
Slide 3 of 4
The circle passing through (1, -2) and touching the axis of x at (3, 0) also passes through the point
Slide 4 of 4
The x-coordinate of the incentre of the triangle that has the coordinates of mid points of its sides as (0, 1), (1, 1) and (1, 0) is
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Previous Year JEE Advanced solutions:
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Get here all the previous year solutions of JEE Advanced questions.
The area enclosed by the curves
$y=sinx+cosxandy=∣cosx−sinx∣$
over the interval
$[0,2π ]$
A curve passes through the point
$(1,6π )$
. Let the slope of the curve at each point
$(x,y)$
be
$xy +sec(xy ),x>0.$
Then the equation of the curve is
Consider the set of eight vector
$V={ai^+bj^ +ck^;a,bc∈{−1,1}}˙$
Three non-coplanar vectors can be chosen from
$V$
is
$2_{p}$
ways. Then
$p$
is_______.
Four person independently solve a certain problem correctly with probabilities
$21 ,43 ,41 ,81 ˙$
Then the probability that he problem is solve correctly by at least one of them is
$256235 $
b.
$25621 $
c.
$2563 $
d.
$256253 $
Slide 1 of 4
The area enclosed by the curves
$y=sinx+cosxandy=∣cosx−sinx∣$
over the interval
$[0,2π ]$
Slide 2 of 4
A curve passes through the point
$(1,6π )$
. Let the slope of the curve at each point
$(x,y)$
be
$xy +sec(xy ),x>0.$
Then the equation of the curve is
Slide 3 of 4
Consider the set of eight vector
$V={ai^+bj^ +ck^;a,bc∈{−1,1}}˙$
Three non-coplanar vectors can be chosen from
$V$
is
$2_{p}$
ways. Then
$p$
is_______.
Slide 4 of 4
Four person independently solve a certain problem correctly with probabilities
$21 ,43 ,41 ,81 ˙$
Then the probability that he problem is solve correctly by at least one of them is
$256235 $
b.
$25621 $
c.
$2563 $
d.
$256253 $
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Previous Year IIT JEE solutions:
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Get here all the previous year solutions of IIT JEE questions.
A pair of fair dice is thrown independently three times. The probability of getting a score of exactly 9 twice is
If
$sin_{−1}(5x )+cosec_{−1}(45 )=2π $
then the value of x is:
In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then the common ratio of this progression equals
The differential equation of all circles passing through the origin and having their centres on the x-axis is
Slide 1 of 4
A pair of fair dice is thrown independently three times. The probability of getting a score of exactly 9 twice is
Slide 2 of 4
If
$sin_{−1}(5x )+cosec_{−1}(45 )=2π $
then the value of x is:
Slide 3 of 4
In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then the common ratio of this progression equals
Slide 4 of 4
The differential equation of all circles passing through the origin and having their centres on the x-axis is
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Previous Year NEET solutions:
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Get here all the previous year solutions of NEET questions.
Closed vascular bundles lack
Age of tree can be estimated by
Companion cells are closely accociated with
Or
Transport of food material in higher plants takes place through
Interfascicular cambium develops from the cells of
Slide 1 of 4
Closed vascular bundles lack
Slide 2 of 4
Age of tree can be estimated by
Slide 3 of 4
Companion cells are closely accociated with
Or
Transport of food material in higher plants takes place through
Slide 4 of 4
Interfascicular cambium develops from the cells of
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Previous Year Board Examination solutions:
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Get here all the previous year solutions of Board Examination questions.
A and B toss coin alternately till one of them gets a head and wins the game. If A starts first, find the probability the B will win the game.
Two cards are drawn successively with replacement from a well shuffled pack of 52 cards. Find the probability distribution of number of jacks.
Evaluate :
$∫1+x_{4}2xtan˙_{−1}x dx$
Using properties of determinants, prove the following
$∣∣∣∣∣∣∣ 3aa−ba−c −a+b3bb−c −a+cc−a3c ∣∣∣∣∣∣∣ =3(a+b+c)(ab+bc+ca)$
Slide 1 of 4
A and B toss coin alternately till one of them gets a head and wins the game. If A starts first, find the probability the B will win the game.
Slide 2 of 4
Two cards are drawn successively with replacement from a well shuffled pack of 52 cards. Find the probability distribution of number of jacks.
Slide 3 of 4
Evaluate :
$∫1+x_{4}2xtan˙_{−1}x dx$
Slide 4 of 4
Using properties of determinants, prove the following
$∣∣∣∣∣∣∣ 3aa−ba−c −a+b3bb−c −a+cc−a3c ∣∣∣∣∣∣∣ =3(a+b+c)(ab+bc+ca)$
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