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Class 12 Physics solutions:
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Get here all the solutions of Class 12's Physics questions.
A mass is suspended separately by two springs of spring constants `k_(1)` and `k_(2)` in successive order. The time periods of oscillations in the two cases are `T_(1)` and `T_(2)` respectively. If the same mass be suspended by connecting the two springs in parallel, (as shown in figure) then the time period of oscillations is T. The correct relations is
A unifrom magnetic filed is restricated with in a region if radius r. The magnetic field change with time at a rate `(dB)/(dt)`.Loop 1 of radius Rgt r encloses the region r and loop 2 of radius R is outside the region ogf magnetic feield as show in the figure. Then , the emf generated is
The truth table given below represents
The following truth table belongs to which of the following four gates ?
Slide 1 of 4
A mass is suspended separately by two springs of spring constants `k_(1)` and `k_(2)` in successive order. The time periods of oscillations in the two cases are `T_(1)` and `T_(2)` respectively. If the same mass be suspended by connecting the two springs in parallel, (as shown in figure) then the time period of oscillations is T. The correct relations is
Slide 2 of 4
A unifrom magnetic filed is restricated with in a region if radius r. The magnetic field change with time at a rate `(dB)/(dt)`.Loop 1 of radius Rgt r encloses the region r and loop 2 of radius R is outside the region ogf magnetic feield as show in the figure. Then , the emf generated is
Slide 3 of 4
The truth table given below represents
Slide 4 of 4
The following truth table belongs to which of the following four gates ?
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Class 12 Chemistry solutions:
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Get here all the solutions of Class 12's Chemistry questions.
`KMnO_4` can be prepared from`K_2MnO_4` as per the reaction:
The reaction can go the completion by removing `OH^(ɵ)` ions by adding.
$[Cr(H_{2}O)_{6}]Cl_{3}$
(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 ?
Slide 1 of 4
`KMnO_4` can be prepared from`K_2MnO_4` as per the reaction:
The reaction can go the completion by removing `OH^(ɵ)` ions by adding.
Slide 2 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 3 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 4 of 4
Which of the following pairs is isostractural (i.e having the same shape and hybridization ?
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Class 12 Maths solutions:
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Get here all the solutions of Class 12's Maths questions.
Does the following graph represent a function or a relation?
Does the following graph pass the vertical or horizontal line test?
The graph of ` y = f(x) ` is as shown in the following figure.
Find the following values:
(i) `underset(x to 4 )"lim" f(x)" "(ii) underset(x to - 3)"lim "f(x)`
` (iii) underset(x to 0^(+))"lim "f(x)" "(iv) underset(x to 0^(-))"lim " f(x)`
`(v) underset(x to 0)"lim "f(x)" "(vi) f(-2)`
`(vii) underset(x to 2^(-))"lim "f(x)" "(viii) underset(x to -2^(-))"lim "f(x)`
`(ix) underset(x to 0)"lim "f(x+1)" "(x) f(0)`
` (x i) underset(x to 0^(+))"lim "f(x-2)" "(x ii) underset(x to 1^(-))"lim " f(x-4)`
For the function g whose graph is given. Arrange the following numbers in increasing order and explain your reasoning.
`g(0), g'(-2), g'(0), g'(2), g'(4)`
Slide 1 of 4
Does the following graph represent a function or a relation?
Slide 2 of 4
Does the following graph pass the vertical or horizontal line test?
Slide 3 of 4
The graph of ` y = f(x) ` is as shown in the following figure.
Find the following values:
(i) `underset(x to 4 )"lim" f(x)" "(ii) underset(x to - 3)"lim "f(x)`
` (iii) underset(x to 0^(+))"lim "f(x)" "(iv) underset(x to 0^(-))"lim " f(x)`
`(v) underset(x to 0)"lim "f(x)" "(vi) f(-2)`
`(vii) underset(x to 2^(-))"lim "f(x)" "(viii) underset(x to -2^(-))"lim "f(x)`
`(ix) underset(x to 0)"lim "f(x+1)" "(x) f(0)`
` (x i) underset(x to 0^(+))"lim "f(x-2)" "(x ii) underset(x to 1^(-))"lim " f(x-4)`
Slide 4 of 4
For the function g whose graph is given. Arrange the following numbers in increasing order and explain your reasoning.
`g(0), g'(-2), g'(0), g'(2), g'(4)`
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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.
The total number of optically active compunds formed in the following reaction is :
Seven identical circular planar disks, each of mass M and radius R are welded symmetrically as shown. The moment of inertia of the arrangement about the axis normal to the plane and passing through the point P is :
One mole of an ideal monoatomic gas is taken along the path ABCA as shown in the PV diagram. The maximum temperature attained by the gas along the path BC is given by :
A Helmholtz coil has a pair of loops, each withN turns and radius R. They are placed coaxially at distance R and the same current I flows through the loops in the same direction. The magnitude of magnetic field at P, midway between the centres A and C, is given by [Refer to figure given below]:
Slide 1 of 4
The total number of optically active compunds formed in the following reaction is :
Slide 2 of 4
Seven identical circular planar disks, each of mass M and radius R are welded symmetrically as shown. The moment of inertia of the arrangement about the axis normal to the plane and passing through the point P is :
Slide 3 of 4
One mole of an ideal monoatomic gas is taken along the path ABCA as shown in the PV diagram. The maximum temperature attained by the gas along the path BC is given by :
Slide 4 of 4
A Helmholtz coil has a pair of loops, each withN turns and radius R. They are placed coaxially at distance R and the same current I flows through the loops in the same direction. The magnitude of magnetic field at P, midway between the centres A and C, is given by [Refer to figure given below]:
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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 IUPAC name of the following compound is
In the following reaction, the major product is
Match the anionic species given in column I that are present in the ore(s) given in column II.
Match the thermodynamic processes given under column I with the expressions given under column II.
.
Slide 1 of 4
The IUPAC name of the following compound is
Slide 2 of 4
In the following reaction, the major product is
Slide 3 of 4
Match the anionic species given in column I that are present in the ore(s) given in column II.
Slide 4 of 4
Match the thermodynamic processes given under column I with the expressions given under column II.
.
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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.
match the name of the animal (colume I ) with one charcteristics (column II ) , and the phylun / class (column III ) to which it belongs
A mass is suspended separately by two springs of spring constants `k_(1)` and `k_(2)` in successive order. The time periods of oscillations in the two cases are `T_(1)` and `T_(2)` respectively. If the same mass be suspended by connecting the two springs in parallel, (as shown in figure) then the time period of oscillations is T. The correct relations is
Select the correct match of the digested products in humans given in coloumn in with their absorption site and mechanism in coloumn II.
Figure shows schematic plan of blood circulation in humans with labels A to D, Identify the label and given its function`//`s
Slide 1 of 4
match the name of the animal (colume I ) with one charcteristics (column II ) , and the phylun / class (column III ) to which it belongs
Slide 2 of 4
A mass is suspended separately by two springs of spring constants `k_(1)` and `k_(2)` in successive order. The time periods of oscillations in the two cases are `T_(1)` and `T_(2)` respectively. If the same mass be suspended by connecting the two springs in parallel, (as shown in figure) then the time period of oscillations is T. The correct relations is
Slide 3 of 4
Select the correct match of the digested products in humans given in coloumn in with their absorption site and mechanism in coloumn II.
Slide 4 of 4
Figure shows schematic plan of blood circulation in humans with labels A to D, Identify the label and given its function`//`s
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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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