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((t+2)¹/⁶ −1)x² + ...
[Co(C2O4)3]3-
[Co(NH3)6]3+
[CoF6]3-
[CoF6]3−
[CrF6]3−
[Fe(CN)6]3-
[FeF6]3-
[Mn(CN)6]3-
[Mn(CN)6]3−
[MnCl6]3-
[MnCl6]3−
∂M/∂x = ∂N/∂y
∂y/∂t = 10π cos(20πx+10πt)
|adj A| = |A|²
|adj(adj A)| = |A|⁴
|adj(adj(adj A))| = |A|⁸
|α−1| ≤ 4
|β−5| ≤ 6
1)
100 observations mean
2 7 9 5 subtracted
20C series question
2a and 2b
2cos³(5θ/2)
2D motion JEE
3D Geometry
3d geometry jee
3D geometry line equation
3d geometry shortest distance
3x3 Matrix
3x3 matrix determinant trick
4A² value
4p Calculation
7 ≤ x + y + z ≤ 77
A adj A equals det A I
a power n mod m
A to B plus C reaction
absolute extrema jee
absolute extrema on closed interval
absolute maximum minimum
AC circuit
AC Circuits
Acceleration Displacement Graph
Acceleration Graph
Acceleration Questions JEE
Acceleration Time Graph
Acceleration vs Displacement
acetic acid dimerization
Acid Base
acidic oxides of transition elements
Acidity Trends
Action Reaction Forces
addition of hcl
Adiabatic Process
adj adj A identity
adj(adj(adj A)) 81
adjoint matrix jee
adjoint properties jee
Advanced Calculus Problem
advanced limits jee
Advanced Math
Advanced Physics Concepts
Ag Hg Cu deposition
AgNO3 reaction with NaI
Al3+ reduction tendency
algebra jee tricks
algebra question
algebraic integration
Alkaline Medium
alpha beta rules
altitudes of triangle
analytic geometry problem
AND gate
angle between vectors
angle of incidence θ
angular momentum conservation
Angular Velocity
AP Problem Solving JEE
aqueous tension
aqueous tension 15 mm Hg
Archimedes Principle
area of ellipse
area of triangle PQR
Area under Curves JEE
Arithmetic Progression JEE
Artificial satellite motion
assertion reason jee
assertion reason physics
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at least 4 batsmen and 4 bowlers
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Atomic Number
Atomic Number 9
Atomic Orbitals
Atomic Physics
atomic spectra jee mains
Atomic Structure
atomic structure jee main
average power dissipated
Avogadro Number
axes along coordinate axes
axis perpendicular to plane
azeotrope jee
azeotropic mixture jee
b greater than zero
bag with 19 unbiased coins
Balance using Buoyant Force
Balancing Equations
balancing reactions
balancing redox reactions
Balloon Problem
bar magnet field lines
Basic Chemistry
Basic Medium
Beats
benzene toluene ideal solution
big exponent remainder
binomial coefficients
Binomial Expansion
Bohr Model
bohr model formula
Bohr’s Model
Bond Enthalpy
both roots negative condition
buffer pH change
buffer solution jee
Bulk Modulus
Buoyancy Concept
butane combustion
c greater than zero
C4H10 + 13/2 O2 reaction
calculate energy Be3+ n=2
calculate molarity from precipitate
calculus problem solving
capacitor in parallel
capacitor with dielectric slab
capacitor with slabs
capillary formula h=2Tcosθ/ρgr
captain vice captain included
Carbon Dioxide
case wise counting trick
center of circle touching axes
center of mass jee mains
central force field
Centre of Mass
change in mean and sd
Charge Density
Charge Distribution
charge on capacitor plates
Charge Sharing
checking exactness
chemical bonding
chemical bonding jee main
Chemical Calculations
Chemical Kinetics
Chemistry Class 11
chemistry concept inert pair
Chemistry Concepts
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chloroform acetone azeotrope
chromium trioxide
circle centered at lambda mu
circle centre plus minus r
circle from complex condition
circle in third quadrant
circle touches coordinate axes
circle touching coordinate axes
circle touching externally
circular disc centroid jee
Circular Motion
Circular Motion JEE
Class 11 Chemistry
Class 11 Maths AP
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Class 12 Chemistry
class 12 ray optics
closed loops magnetism
cobalt complex electron count
Coefficient of Restitution
CoF6 3-
coin tossed shows head
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collinearity condition 3d
combinations with compulsory players
combinatorics with polygons
Combustion Analysis
Combustion Reactions
common ratio gp
competitive exam maths
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Competitive Maths Question
complex numbers jee
complex numbers locus
composite body com
compulsory members combination
compute expression |a+b|+|a−b| over |a+b|−|a−b|
compute α² + β²
concave mirror
Concentration
Concept Notes
condition for exactness
condition for purely
condition for purely real
condition for same velocity for all t
conditional probability
Conducting Spheres
Conductor Properties
conductor shielding effect
Conic Sections
conic sections JEE
consistency condition
Continuity Problem
convex mirror
Coordinate Geometry
Coordinate Geometry JEE
coordinate geometry triangle
coordination compounds
correction in mean formula
cos2θ cos(θ/2) + cos(5θ/2)
coulomb's force potential energy
count integer solutions
Cr²⁺
cr2o7 to cr3+ redox
Cr³⁺
critical angle
critical points meaning
cross product
cross product formula sd
crystal field theory
Cu(NO3)2 AgNO3 Hg2(NO3)2 Mg(NO3)2 electrolysis
Cu⁺
Cu²⁺
Current Electricity
cycle length modulo
cyclicity mod 7
cyclicity of powers
d Block
d2sp3 hybridization
de-Broglie Wavelength
decreasing order
Definite and Indefinite Integral JEE
definite integral from 0 to pi
Definite Integral JEE
Definite Integration
degree 4 polynomial
delta h zero concept
density of carbon nucleus
derivative in numerator pattern
derivative to find extremes
derivative with log modulus
determinant of adj A
determinant property adj A
determinant zero
Determinants
dielectric capacitor problem
differential equation solution
digital electronics basics
dimensional analysis
dimensional formula jee
Dimensions
direction ratios of line
directrix 2x+y+2=0
disc with hole
discriminant ≥ 0
discriminant condition
Displacement Current
Displacement Graph
Displacement vs Distance
dissociation of H2O
distance between centres equals sum of radii
distance between object and image 40 cm
distance from focus
distance from point to line
distance from velocity time graph
distance of point from line
dot product conditions
dot product relation
Doubtify
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DoubtifyJEE
doutify
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Droplets from Tap
Dumas method
eccentricity from quadratic
effective capacitance with dielectrics
eighth tenth twelfth terms sum 15309
Einstein photoelectric equation
Elastic Collision
Elasticity
Elasticity JEE
electric field and flux
electric field inside cavity
Electric Fields
Electric Flux
electric flux jee
Electric Potential
Electrochemistry
electrochemistry numerical jee
electrolysis deposition order
electromagnetic wave intensity relation
electromagnetic waves
Electromagnetism
Electron Acceleration
electron pair repulsion
Electronic Configuration
electronic configuration stability
Electronics
Electrostatics
Electrostatics JEE
electrostatics numerical
Elemental Analysis
eliminate parameter trick
elimination of parameter
ellipse equation 16(α−2)²+9(β−6)² ≤144
ellipse parameters calculation
ellipse through four foci
emainder of large powers
Emissivity
Empirical Formula
energy level transitions
Enthalpy Change
enthalpy of formation chemistry
enthalpy of formation jee
epsilon not permittivity
Equation Balancing
equation of circle in complex plane
equilibrium chemistry problem
equilibrium pressure calculation
Equipotential Surface
error in data correction
ethanol water azeotrope
Evaluate f(0)
exact DE trick
exact differential equation
exchange energy concept
expected value E(X²)=2E(X)
exponential approximation
exponential limit e^(5x^(4/3))−1
external tangency of circles
extrema on closed interval
extreme values at x=4 and x=5
F = m dv/dt
f prime equals zero
f prime equals zero condition
f(x)=x^3+ax^2+b ln|x|+1
Faraday cage concept
fbd for jee
Fe(CN)6 3-
FeF6 3-
Filters in YDSE
find 8p−1
find eccentricity of new ellipse
find f(2)
find focal length of mirror
find force vs x
find n
find probability coin is unbiased
find product of gp terms
Find α+β+γ
finding a and b from critical points
first derivative = 0
First Ionization Energy
First Order
First Order Reaction
Floating bodies in orbit
Fluids in Mechanics
Fluids Mechanics
Fluorine
Flux Through Cube
flux through surface
Focal Distances Product
foci of ellipse and hyperbola
focus (-2
focus directrix definition
Force Addition
Force System Problems
force vs energy
free body diagram jee mains
Free Fall
Friction
frictional force non-conservative
Function f(x) = (tan(tanx) − sin(sinx))/(tanx − sinx)
Functions
G.P. positive terms
gas phase kinetics
gauss law for magnetism
gauss law jee
Gauss’s Law
geometric progression
geometric progression to arithmetic progression
gibbs free energy and equilibrium
glass vs air refractive index
gp to ap condition
Graph Based Questions
Graphical Physics
Graphs in Kinematics
gravimetric analysis chemistry
gravitational force potential energy
H₂Se
H₂Te
HA dissociation constant
Half-Life Concept
Harmonic Waves
Heat and Thermodynamics
Heat Capacity
heat conduction
Helicopter Drop Problem
Helicopter Problem
helium argon comparison
henderson hasselbalch basic buffer
henderson hasselbalch equation
high spin complexes
high spin low spin
hybridisation concept
Hydrides
Hydrogen Spectrum
hydrogenic ions chemistry
Hyperbola Focus and Directrix
Hyperbola JEE
ideal gas equation
ideal gas equation jee
ideal solution jee
IITJEE mechanics
IITJEE Quadratic Limit
IITJEE ray optics
Important Chemistry Questions
important jee chemistry question
Important Physics Concepts
Important PYQs
impulse dimension
incident on flat face
incident wavelength λᵢ
induced charge concept
induced charge formula
inductor capacitor resistor
Inelastic Collision
inequality for roots < 0
inert electrodes electrolysis
inert pair effect
Infinite Sheet
initial value problem
Instantaneous Power
instantaneous transverse velocity
integration
Integration JEE Problems
integration shortcuts jee
integration tricks
integration with limits
interface temperature
Interference
Interference of Light
intersection of lines
interval method quadratic
Ion Electron Method
Ionic Equation
Ionisation Enthalpy
Isobaric Process
Isochoric Process
Isomerism
Isothermal Process
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k2cr2o7 hcl reaction
KA/KB ratio
kf value water
Kinematics
Kinematics JEE
kinematics jee mains
Kinetic Theory
KKD
Krishna Ke Doubts
LA/LB ratio
large exponents remainder trick
Laws of Motion
Lens
Lens Combination
ligand field strength
light bending rule
lightning safety aircraft
lim t → −1⁺
lim x→0 f(x)/x² = 5
Limit and Continuity JEE
Limit of roots
limiting reagent
limiting reagent O2
limits approximation trick
line intersecting two lines
line passing through point
line through a given point
linear algebra problem
linear DE with cosx
Liquid Compression
liquid mixture vapour composition
locus definition of parabola
locus of z
locus on unit circle
log(1+3x^2) limit
logical reasoning JEE
low spin complexes
M dy + N dx = 0
Magnesium Nitric Acid Reaction
Magnetic Effects of Current
Magnetic Field
magnetic field lines
magnetic moment order
magnetic monopoles
Magnetism
Magnetostatics
magnification m = v/u
magnitude of vector difference
magnitude of vector sum
manganese complex unpaired electrons
manganese heptoxide
mass density dimension
mass number relation
Mass of Oxygen
mass of water formed 138576.9 g
Maths
Maths PYQs
maths short tricks
Maths Tricks for JEE
Matrices
Matrix AAᵀ
matrix algebra tricks
matrix power rules
Matrix Questions
max min calculus trick
maximum θ for TIR
mean and standard deviation correction
Mechanics
mechanics variable velocity
mesomeric effect jee
Minimum Distance
Minimum distance problems
mirror formula 1/f = 1/v + 1/u
ML⁻³
ML²
ML²T⁻³
MLT⁻¹
Mn(CN)6 3-
MnBr4 2- magnetic properties
Modern Physics
modular arithmetic
modulo arithmetic trick
Molality
molar conductance
molar mass butane 58.12 g/mol
Mole Concept
Mole Fraction
mole fraction in vapour phase
molecular shapes
molecular structure
moles calculation
moles from mass formula
moles of O2 = 10000
Moment of Inertia
moment of inertia dimension
moment of inertia disk
moment of inertia of remaining part
Momentum Graph
Momentum vs Height
Monatomic Gas
monobasic acid jee
Mosquito Velocity Question
Motion and Heat
Motion Graphs
Motion in 1D
Motion in a Circle
Motion in a Plane
Motion in a Straight Line
Motion in One Dimension
motion in one dimension jee
Motion in Plane
Motion in Straight Line
Motion Questions JEE
Motion Under Gravity
motion under gravity jee
multiple angle formulas
n by n matrix determinant
N3- hybridization
NAND gate
NaOH
Navigation physics
NEET chemistry
newton second law
newton second law example jee
newton second law units
Newton's Law of Cooling
Newton's Laws
Newton’s Third Law
nh3 nh4cl buffer
NiCl4 2- geometry
NiCN4 2- magnetic moment
NiCO4 shape and magnetism
nitrogen
nitrogen gas volume 50 mL
No Interference Concept
NO2- hybridization
NOR gate
NOT gate
ns2 electrons inert
nuclear radius formula R = R₀A^(1/3)
number of quadrilaterals
number of real roots
number of solutions
number of triangles from n vertices
number theory jee
octahedral complexes
one double headed coin
One-Dimensional Motion
optical density misconception
optical medium density
optics JEE mains
OR gate
Organic Chemistry
Organic Compound Analysis
orthocenter formula
oxidation number method
oxidation reduction
oxidation states stability
oxidation states transition and post-transition
p + q = 126
P Block
P(X=0)=p
P(X=1)=p
P(X=2)=P(X=3)
parabola equation derivation
parabola focus directrix form
parabola focus directrix trick
parallel axis theorem
parallel plate capacitor
paramagnetic complexes
parameter based quadratic
parametric curves trigonometry
parametric form of line
parametric form of lines
parametric form of solutions
parametric form x=3tan(theta+pi/3)
parametric to cartesian conversion
partial derivative test
partial pressure correction
Percentage Composition
percentage nitrogen
Periodic Table Trends
Periodic Trends
perpendicular foot formula
perpendicularity condition in space
pH
pH and emf relation
phase difference
phase difference 20πΔx = 2πn
Phasor Addition
photoelectron de Broglie λₑ
Physical Chemistry
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Physical Properties of Fluids
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Physics Class 12
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Physics Numericals
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piecewise equation
pKb of ammonia
Planck constant relation
planet motion around sun
plate separation 0.5 mm
pOH calculation
point of concurrency
point of contact of circles
Point on Hyperbola
Points Q and R
polynomial function R→R
post transition metals
potential difference 5 V
Potential Energy
potential energy concept
Potential Equality
power dimension
power factor
precipitation titration jee
pressure
Pressure and Volume
pressure method kinetics
Pressure Volume Relation
probabilities p
probability distribution
probability problem
product of roots 2p+9 positive
Projectile Motion
Projectile Motion JEE
Propane
Pt P∞ relation
purely imaginary complex number
purely imaginary complex number condition
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purely real complex number condition
PV Diagram
PV Gamma Relation
pv=nrt jee
PYQ
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PYQs
PYQs JEE
Quadratic Equation JEE
quadratic equation shortcut
quadratic equations jee
quadratic roots sign trick
Quantized Orbits
Quantum Mechanics
Quantum Numbers
rA/rB ratio
radius 3 circle
radius proportional to A^(1/3)
radius vector
random variable X values 0 1 2 3
range of rational function
rank and consistency
raoult law deviations
raoults law
rate constant expression k
ratio of coefficients
Ratio of Distance and Displacement
rational expressions range
Ray Optics
Re((z−1)/(2z+i))
Re((z−1)/(2z−i))
reactance and impedance
Reaction Rate
Real Life Physics
real root count
rectangle region in R²
Red Green Filter YDSE
Redox
redox potentials Al and Tl
Redox Reaction
redox reaction emf calculation
redox reaction jee
Redox Reactions
Refraction
refraction angle formula
refraction at plane surface
refraction formula
refractive index μ=1.25
region defined by absolute value
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regular polygon triangles
relation v dv/dx = a
Relations
Relative motion
Relative Speed
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remainder theorem
remainder theorem jee
Resistance
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resonance structures X2Y
Restitution
restoring force potential
Resultant Amplitude Phase
Resultant Angle
RLC series circuit
Rocket Science Basics
roots
Rotating Disk
Rotational Motion
rpm to angular velocity jee
RPM to Rad/s
rydberg concept jee
same temperature gases
Satellite Physics
sd correction trick
second fourth sixth terms sum 21
Sequence and Series JEE
Sequences
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set A definition
set B definition
Sets
SF6 hybridization
shape of molecules
Short Notes JEE
shortest distance between lines
shortest distance method
sin x approx x
sinθ refractive index
skew lines jee
skew lines perpendicular
slope of altitude
small angle approximation
small disc removed
Snell's law
Snell's Law JEE
SO2 hybridization
Solenoid
Solutions
solutions in [−π/2
solve |x−2|
solve |x−3|
solve dy dx equation
solve for coefficients
solve for constants
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Solve limit of roots
solve trig equation
solving determinant powers
solving exact differential equation
Spacing Between Droplets
Spectral Lines
speed of light
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Speed Time Distance
spin only magnetic moment
Square Loop
stability of Al3+
standard approximations limits
standard area method
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standard limits jee
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standard state jee chemistry
statistics concept booster
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Stoichiometry
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Stress and Strain
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substitution method
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subtract numbers to form ap
sum of roots p+2 positive
Superposition
Superposition of Waves
Surface Charge
Surface Charge Density
surface tension 70 dyn/cm
surrounding medium μ=1.0
symmetrical distribution of electrons
system of linear equations infinite solutions
system of particles jee
tan inverse 3√x square
tan inverse substitution
tan inverse x approx x
tan theta shift identities
tan x approx x
tan(5x^(1/3)) limit
team selection permutation combination
team selection with conditions
Tension force problems
Tension in strings
thallium oxidation states
thermal conductivity
thermal energy per molecule
Thermal Physics
Thermal Radiation
Thermodynamics
three variable equations
threshold wavelength λ₀
Time Dependence
Time Ratio
Time Speed Distance
Tl+ vs Tl3+ stability
Tl3+ oxidising agent
torque and angular acceleration jee
Torque Balance
torque formula jee
Torque Problems
torque τ = pE sin30°
total internal reflection
Trace of Matrix
Train Crossing
Train Crossing Problems
Train Problem JEE Mains
Train Problems
transition metal ions
Transverse and Conjugate Axes
trigonometric equation
trigonometric identities
trigonometric parametric equations
truth table concept
Two Body Motion
two circles touch externally
two rods in series
u equals cos x trick
Uniform Acceleration
unit of √2I/ϵ0c
unit of electric field
units and dimensions
universal gas constant jee
unpaired electrons
unpaired electrons count
v-t graph
vacuum permittivity
valence bond theory
van't hoff factor jee
vanadium oxides
vapour pressure question
variable acceleration motion
Vector Algebra
vector form jee
vector form of line
vector form of lines
vector geometry problem
vector method sd between lines
Vector Motion
Vectors
Velocity Displacement Graph
Velocity Time Graph
velocity time graph jee
vertex of parabola
Vertical Motion
volume
Volume Change
VSEPR chart
VSEPR shortcut
VSEPR theory
water decomposition equilibrium
water formed
water in glass tube
water moles = 7692.31
Wave Interference
Wave Optics
Wave Superposition JEE
Waves
weak base strong acid buffer
weak field F- Cl-
Weightlessness
Work Done in Thermodynamics
Work Energy Power
work function concept
wrong observation statistics
x and y in terms of theta
x tends to zero plus
x(x^2+e^x)dy + (e^x(x-2)y - x^3)dx = 0
X=X⁺–Y⁻ structure
x|x−2| + 3|x−3| + 1 = 0
x1 x2 x3 x4 gp
y=2tan(theta+pi/6)
YDSE
Young Modulus
Young's Modulus
Zener Diode
αₜ and βₜ roots
ΔG and K relation
ε₀ value
π integral question
π/2]
Lens
Focal Length Change of Lens in Different Media

Focal Length Change of Lens in Different Media

❓ Concept Lens ko air se nikaal kar paani mein daal diya… aur suddenly focal length change ho gaya? 🤔 👉 Isme koi magic nahi — sirf relative ref…
Lens Formula in Different Medium

Lens Formula in Different Medium

❓ Question A lens having refractive index 1.6 1.6 1.6 has a focal length of 12 cm when it is placed in air . Find the focal length of the same le…
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