New chat PYQ Library Doubts Rank report

Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →

2024 · 1 Feb · Shift 2

90 questions · JEE Main

Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.

PYQ Library
JEE Main
Papers
2024 · 1 Feb · Shift 2

2024 · 1 Feb · Shift 2

90 questions · JEE Main

Chemistry30 questions Mathematics30 questions Physics30 questions

HydrocarbonsChemistry · 2 questions Ionic EquilibriumChemistry · 1 questions P Block ElementsChemistry · 2 questions Basics of Organic ChemistryChemistry · 4 questions Coordination CompoundsChemistry · 3 questions Periodic Table and PeriodicityChemistry · 2 questions Chemistry in Everyday LifeChemistry · 1 questions Alcohols Phenols and EthersChemistry · 1 questions D and F Block ElementsChemistry · 1 questions Structure of AtomChemistry · 1 questions Aldehydes Ketones and Carboxylic AcidsChemistry · 1 questions Chemical Bonding and Molecular StructureChemistry · 2 questions BiomoleculesChemistry · 1 questions SolutionsChemistry · 1 questions Chemical Kinetics and Nuclear ChemistryChemistry · 1 questions ThermodynamicsChemistry · 1 questions ElectrochemistryChemistry · 2 questions Practical Organic ChemistryChemistry · 1 questions Compounds Containing NitrogenChemistry · 1 questions Some Basic Concepts of ChemistryChemistry · 1 questions FunctionsMathematics · 1 questions Complex NumbersMathematics · 1 questions 3D GeometryMathematics · 3 questions Sets and RelationsMathematics · 1 questions Matrices and DeterminantsMathematics · 2 questions Definite IntegrationMathematics · 3 questions Quadratic Equation and InequalitiesMathematics · 1 questions ProbabilityMathematics · 1 questions EllipseMathematics · 1 questions StatisticsMathematics · 1 questions Limits Continuity and DifferentiabilityMathematics · 2 questions Trigonometric Functions and EquationsMathematics · 1 questions CircleMathematics · 1 questions Differential EquationsMathematics · 2 questions Sequences and SeriesMathematics · 2 questions Binomial TheoremMathematics · 1 questions Area Under the CurvesMathematics · 2 questions DifferentiationMathematics · 1 questions Straight Lines and Pair of Straight LinesMathematics · 2 questions Vector AlgebraMathematics · 1 questions Atoms and NucleiPhysics · 2 questions Laws of MotionPhysics · 2 questions Dual Nature of RadiationPhysics · 2 questions ElectrostaticsPhysics · 2 questions CapacitorPhysics · 2 questions Units and MeasurementsPhysics · 1 questions Properties of MatterPhysics · 2 questions Current ElectricityPhysics · 2 questions Heat and ThermodynamicsPhysics · 2 questions Motion in A Straight LinePhysics · 2 questions GravitationPhysics · 1 questions Wave OpticsPhysics · 2 questions Electromagnetic WavesPhysics · 1 questions Electronic DevicesPhysics · 1 questions Electromagnetic InductionPhysics · 2 questions Rotational MotionPhysics · 2 questions Simple Harmonic MotionPhysics · 1 questions MagneticsPhysics · 1 questions

Q1.In the given reactions identify $A$ and $B$ Includes diagram
Chemistry · Hydrocarbons · MCQ
Q2.Solubility of calcium phosphate (molecular mass, M) in water is $W_{g}$ per $2 5^{\circ} C$ at $2 5^{\circ} C$ . Its solubility product at $2 5^{\circ} C$ will be approximately.
Chemistry · Ionic Equilibrium · MCQ
Q3.Given below are two statements : Statement (I) : $SiO_{2}$ and $GeO_{2}$ are acidic while $SnO$ and $PbO$ are amphoteric in nature. Statement (II) : Allotropic forms of carbon are due to property of…
Chemistry · P Block Elements · MCQ
Q4.The set of meta directing functional groups from the following sets is :
Chemistry · Basics of Organic Chemistry · MCQ
Q5. $[Co (NH_{3})_{6}]^{3 +}$ and $[CoF_{6}]^{3 -}$ are respectively known as :
Chemistry · Coordination Compounds · MCQ
Q6.The transition metal having highest $3^{rd}$ ionisation enthalpy is :
Chemistry · Periodic Table and Periodicity · MCQ
Q7.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Chemistry · Chemistry in Everyday Life · MCQ
Q8.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Chemistry · Alcohols Phenols and Ethers · MCQ
Q9.Given below are two statements : Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with $NiCl_{2}$ solution in presence of $NH_{4} OH$ . Statement (II) : Prussian blue precipitate…
Chemistry · Coordination Compounds · MCQ
Q10.Acid D formed in above reaction is : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q11.Lassaigne's test is used for detection of :
Chemistry · Basics of Organic Chemistry · MCQ
Q12.The strongest reducing agent among the following is :
Chemistry · P Block Elements · MCQ
Q13.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : In aqueous solutions $Cr^{2 +}$ is reducing while $Mn^{3 +}$ is oxidising in nature. Reason (R) :…
Chemistry · D and F Block Elements · MCQ
Q14.The functional group that shows negative resonance effect is :
Chemistry · Basics of Organic Chemistry · MCQ
Q15.The number of radial node/s for $3 p$ orbital is :
Chemistry · Structure of Atom · MCQ
Q16.Which among the followng has highest boiling point?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q17.Given below are two statements : Statement (I) : A $π$ bonding MO has lower electron density above and below the inter-nuclear axis. Statement (II) : The $π^{*}$ antibonding MO has a node between the nuclei. In the light of the above…
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q18.Given below are two statements : Statement (I) : Both metals and non-metals exist in p and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals. In the light of the…
Chemistry · Periodic Table and Periodicity · MCQ
Q19.Which of the following compounds show colour due to d-d transition?
Chemistry · Coordination Compounds · MCQ
Q20.Select the compound from the following that will show intramolecular hydrogen bonding.
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q21.The number of tripeptides formed by three different amino acids using each amino acid once is .
Chemistry · Biomolecules · Numerical
Q22.Mass of ethylene glycol (antifreeze) to be added to $- 2 4^{\circ} C$ of water to protect the freezing point at $- 2 4^{\circ} C$ is $kg$ (Molar mass in $g mol^{- 1}$ for…
Chemistry · Solutions · Numerical
Q23.Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is .
Chemistry · Basics of Organic Chemistry · Numerical
Q24.The following data were obtained during the first order thermal decomposition of a gas A at constant volume : $A (g) \to 2 B (g) + C (g)$ The rate constant of the reaction is … Includes table
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q25.For a certain reaction at $300 K, K = 10$ , then $Δ G^{\circ}$ for the same reaction is - $\times 1 0^{- 1} kJ mol^{- 1}$ . (Given $R = 8.314 JK^{- 1} mol^{- 1}$ …
Chemistry · Thermodynamics · Numerical
Q26.The amount of electricity in Coulomb required for the oxidation of $H_{2} O$ of $H_{2} O$ to $O_{2}$ is $\times 1 0^{5} C$ .
Chemistry · Electrochemistry · Numerical
Q27.Following Kjeldahl's method, $10 mL$ of organic compound released ammonia, that neutralised $2 M H_{2} SO_{4}$ of $2 M H_{2} SO_{4}$ . The percentage of nitrogen in the compound is $%$ .
Chemistry · Practical Organic Chemistry · Numerical
Q28.Consider the following redox reaction : $MnO_{4}^{-} + H^{+} + H_{2} C_{2} O_{4} ⇌ Mn^{2 +} + H_{2} O + CO_{2}$ The standard reduction potentials are given as…
Chemistry · Electrochemistry · Numerical
Q29.Number of compounds which give reaction with Hinsberg's reagent is . Includes diagram
Chemistry · Compounds Containing Nitrogen · Numerical
Q30. $40 mL$ of gaseous hydrocarbon on combustion gives $CO_{2} (g)$ of $CO_{2} (g)$ and $50 mL$ of water vapour. Total number of carbon and hydrogen atoms in the hydrocarbon is…
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q31.If the domain of the function $f (x) = \frac{x ^{2} - 25}{( 4 - x ^{2} )} + lo g_{10} (x^{2} + 2 x - 15)$ is $(- \infty, α) \cup [β, \infty)$ , then $α^{2} + β^{3}$ is equal to :
Mathematics · Functions · MCQ
Q32.If $z$ is a complex number such that $∣ z ∣ ⩽ 1$ , then the minimum value of $z + \frac{1}{2} (3 + 4 i)$ is :
Mathematics · Complex Numbers · MCQ
Q33.Consider a $△ A B C$ where $A (1, 3, 2), B (- 2, 8, 0)$ and $C (3, 6, 7)$ . If the angle bisector of $∠ B A C$ meets the line $B C$ at $D$ , then the length of the projection of the vector $A D$ on the vector $A C$ …
Mathematics · 3D Geometry · MCQ
Q34.Consider the relations $R_{1}$ and $R_{2}$ defined as $a R_{1} b \Leftrightarrow a^{2} + b^{2} = 1$ for all $a, b \in R$ and $(a, b) R_{2} (c, d) \Leftrightarrow a + d = b + c$ for all $(a, b), (c, d) \in N \times N$ . Then :
Mathematics · Sets and Relations · MCQ
Q35.Let the system of equations $x + 2 y + 3 z = 5, 2 x + 3 y + z = 9, 4 x + 3 y + λ z = μ$ have infinite number of solutions. Then $λ + 2 μ$ is equal to :
Mathematics · Matrices and Determinants · MCQ
Q36.If $0 \int \frac{π}{3} cos^{4} x d x = a π + b 3$ , where $a$ and $b$ are rational numbers, then $9 a + 8 b$ is equal to :
Mathematics · Definite Integration · MCQ
Q37.Let $α$ and $β$ be the roots of the equation $p x^{2} + q x - r = 0$ , where $p e q 0$ . If $r$ and $r$ be the consecutive terms of a non constant G.P. and $\frac{1}{α} + \frac{1}{β} = \frac{3}{4}$ , then the value of $(α - β)^{2}$ …
Mathematics · Quadratic Equation and Inequalities · MCQ
Q38.Let Ajay will not appear in JEE exam with probability $p = \frac{2}{7}$ , while both Ajay and Vijay will appear in the exam with probability $q = \frac{1}{5}$ . Then the probability, that Ajay will appear in the exam and Vijay…
Mathematics · Probability · MCQ
Q39.Let $P$ be a point on the ellipse $\frac{x ^{2}}{9} + \frac{y ^{2}}{4} = 1$ . Let the line passing through $P$ and parallel to $y$ -axis meet the circle $x^{2} + y^{2} = 9$ at point $Q$ such that $P$ and $Q$ are on…
Mathematics · Ellipse · MCQ
Q40.Consider 10 observations $x_{1}, x_{2}, \dots, x_{10}$ such that $i = 1 \sum 10 (x_{i} - α) = 2$ and $i = 1 \sum 10 (x_{i} - β)^{2} = 40$ , where $α, β$ are positive integers. Let the mean and the…
Mathematics · Statistics · MCQ
Q41.Let $f (x) = 2 x^{2} + 5 x ∣ - 3∣, x \in R$ . If $m$ and $n$ denote the number of points where $f$ is not continuous and not differentiable respectively, then $m + n$ is equal to :
Mathematics · Limits Continuity and Differentiability · MCQ
Q42.The number of solutions of the equation $4 sin^{2} x - 4 cos^{3} x + 9 - 4 cos x = 0; x \in [- 2 π, 2 π]$ is :
Mathematics · Trigonometric Functions and Equations · MCQ
Q43.Let the locus of the midpoints of the chords of the circle $x^{2} + (y - 1)^{2} = 1$ drawn from the origin intersect the line $x + y = 1$ at $P$ and $Q$ . Then, the length of $PQ$ is :
Mathematics · Circle · MCQ
Q44.Let $α$ be a non-zero real number. Suppose $f : R \to R$ is a differentiable function such that $f (0) = 2$ and $x \to - \infty lim f (x) = 1$ . If $f^{'} (x) = α f (x) + 3$ , for all $x \in R$ …
Mathematics · Differential Equations · MCQ
Q45.Let $P$ and $Q$ be the points on the line $\frac{x + 3}{8} = \frac{y - 4}{2} = \frac{z + 1}{2}$ which are at a distance of 6 units from the point $R (1, 2, 3)$ . If the centroid of the triangle PQR is $(\alpha, \beta,…
Mathematics · 3D Geometry · MCQ
Q46.The value of $0 \int 1 (2 x^{3} - 3 x^{2} - x + 1)^{\frac{1}{3}} d x$ is equal to :
Mathematics · Definite Integration · MCQ
Q47.If the mirror image of the point $P (3, 4, 9)$ in the line $\frac{x - 1}{3} = \frac{y + 1}{2} = \frac{z - 2}{1}$ is $(α, β, γ)$ , then 14 $(α + β + γ)$ is :
Mathematics · 3D Geometry · MCQ
Q48.Let $S_{n}$ denote the sum of the first $n$ terms of an arithmetic progression. If $S_{10} = 390$ and the ratio of the tenth and the fifth terms is $15 : 7$ , then $S_{15} - S_{5}$ is equal to :
Mathematics · Sequences and Series · MCQ
Q49.Let $m$ and $n$ be the coefficients of seventh and thirteenth terms respectively in the expansion of $(\frac{1}{3} x^{\frac{1}{3}} + \frac{1}{2 x ^{\frac{2}{3}}})^{18}$ . Then $(\frac{n}{m})^{\frac{1}{3}}$ …
Mathematics · Binomial Theorem · MCQ
Q50.Let $f (x) = {x - 1, x is even, 2 x, x is odd, x \in N$ . If for some $a \in N, f (f (f (a))) = 21$ , then $x \to a^{-} lim {\frac{∣ x ∣ ^{3}}{a} - [\frac{x}{a}]}$ …
Mathematics · Limits Continuity and Differentiability · MCQ
Q51.Three points $O (0, 0), P (a, a^{2}), Q (- b, b^{2}), a > 0, b > 0$ , are on the parabola $y = x^{2}$ . Let $S_{1}$ be the area of the region…
Mathematics · Area Under the Curves · Numerical
Q52.The sum of squares of all possible values of $k$ , for which area of the region bounded by the parabolas $2 y^{2} = k x$ and $ky^{2} = 2 (y - x)$ is maximum, is equal to :
Mathematics · Area Under the Curves · Numerical
Q53.If $y = \frac{( x + 1 ) ( x ^{2} - x )}{x x + x + x} + \frac{1}{15} (3 cos^{2} x - 5) cos^{3} x$ , then $96 y^{'} (\frac{π}{6})$ is equal to :
Mathematics · Differentiation · Numerical
Q54.If $\frac{d x}{d y} = \frac{1 + x - y ^{2}}{y}, x (1) = 1$ , then $5 x (2)$ is equal to .
Mathematics · Differential Equations · Numerical
Q55.Let $f : (0, \infty) \to R$ and $F (x) = 0 \int x t f (t) dt$ . If $F (x^{2}) = x^{4} + x^{5}$ , then $r = 1 \sum 12 f (r^{2})$ is equal to …
Mathematics · Definite Integration · Numerical
Q56.Let $A B C$ be an isosceles triangle in which $A$ is at $(- 1, 0), ∠ A = \frac{2 π}{3}, A B = A C$ and $B$ is on the positve $x$ -axis. If $BC = 43$ and the line $BC$ intersects the line $y = x + 3$ at $(\alpha,…
Mathematics · Straight Lines and Pair of Straight Lines · Numerical
Q57.Let $A = I_{2} - 2 M M^{T}$ , where $M$ is a real matrix of order $2 \times 1$ such that the relation $M^{T} M = I_{1}$ holds. If $λ$ is a real number such that the relation $A X = λ X$ holds for some non-zero real matrix $X$ of order $2 \times 1$ …
Mathematics · Matrices and Determinants · Numerical
Q58.Let $a = \hat{i} + \hat{j} + \hat{k}, b = - \hat{i} - 8 \hat{j} + 2 \hat{k}$ and $c = 4 \hat{i} + c_{2} \hat{j} + c_{3} \hat{k}$ be three vectors such that $b \times a = c \times a$ …
Mathematics · Vector Algebra · Numerical
Q59.If three successive terms of a G.P. with common ratio $r (r > 1)$ are the lengths of the sides of a triangle and $[r]$ denotes the greatest integer less than or equal to $r$ , then $3 [r] + [- r]$ is equal to …
Mathematics · Sequences and Series · Numerical
Q60.The lines $L_{1}, L_{2}, \dots, L_{20}$ are distinct. For $n = 1, 2, 3, \dots, 10$ all the lines $L_{2 n - 1}$ are parallel to each other and all the lines $L_{2 n}$ pass through a given point…
Mathematics · Straight Lines and Pair of Straight Lines · Numerical
Q61.From the statements given below : (A) The angular momentum of an electron in $n^{th}$ orbit is an integral multiple of $ℏ$ . (B) Nuclear forces do not obey inverse square law. (C) Nuclear forces are spin dependent. (D) Nuclear…
Physics · Atoms and Nuclei · MCQ
Q62.A body of mass $F_{1} = 5 \hat{i} + 8 \hat{j} + 7 \hat{k}$ experiences two forces $F_{1} = 5 \hat{i} + 8 \hat{j} + 7 \hat{k}$ and $F_{2} = 3 \hat{i} - 4 \hat{j} - 3 \hat{k}$ . The acceleration acting on the body is :
Physics · Laws of Motion · MCQ
Q63.Monochromatic light of frequency $6 \times 1 0^{14} Hz$ is produced by a laser. The power emitted is $2 \times 1 0^{- 3} W$ . How many photons per second on an average, are emitted by the source ? (Given $h = 6.63 \times 1 0^{- 34} Js$ …
Physics · Dual Nature of Radiation · MCQ
Q64. $C_{1}$ and $C_{2}$ are two hollow concentric cubes enclosing charges $2 Q$ and $3 Q$ respectively as shown in figure. The ratio of electric flux passing through $C_{1}$ and $C_{2}$ is : Includes diagram
Physics · Electrostatics · MCQ
Q65.A galvanometer $(G)$ of $2Ω$ resistance is connected in the given circuit. The ratio of charge stored in $C_{1}$ and $C_{2}$ is : Includes diagram
Physics · Capacitor · MCQ
Q66.Match List - I with List - II. Choose the correct answer from the options given below : Includes table
Physics · Units and Measurements · MCQ
Q67.A big drop is formed by coalescing 1000 small droplets of water. The surface energy will become :
Physics · Properties of Matter · MCQ
Q68.A cricket player catches a ball of mass $25 m / s$ moving with $25 m / s$ speed. If the catching process is completed in $0.1 s$ then the magnitude of force exerted by the ball on the hand of player will…
Physics · Laws of Motion · MCQ
Q69.In a metre-bridge when a resistance in the left gap is $2Ω$ and unknown resistance in the right gap, the balance length is found to be $2Ω$ . On shunting the unknown resistance with $2Ω$ , the balance length changes…
Physics · Current Electricity · MCQ
Q70.A diatomic gas $(γ = 1.4)$ does $200 J$ of work when it is expanded isobarically. The heat given to the gas in the process is :
Physics · Heat and Thermodynamics · MCQ
Q71.Train A is moving along two parallel rail tracks towards north with speed $72 km / h$ and train B is moving towards south with speed $108 km / h$ . Velocity of train B with respect to A and velocity of…
Physics · Motion in A Straight Line · MCQ
Q72.A light planet is revolving around a massive star in a circular orbit of radius $R$ with a period of revolution T. If the force of attraction between planet and star is proportional to $R^{- 3/2}$ then choose the correct…
Physics · Gravitation · MCQ
Q73.A microwave of wavelength $4.0 cm$ falls normally on a slit of width $1.5 m$ . The angular spread of the central maxima of the diffraction pattern obtained on a screen $1.5 m$ away from the slit, will be :
Physics · Wave Optics · MCQ
Q74.If the root mean square velocity of hydrogen molecule at a given temperature and pressure is $2 km / s$ , the root mean square velocity of oxygen at the same condition in $km / s$ is :
Physics · Heat and Thermodynamics · MCQ
Q75.If frequency of electromagnetic wave is $z$ and it travels in air along $z$ direction then the corresponding electric and magnetic field vectors will be mutually perpendicular to each other and the wavelength of the wave (in…
Physics · Electromagnetic Waves · MCQ
Q76.To measure the temperature coefficient of resistivity $α$ of a semiconductor, an electrical arrangement shown in the figure is prepared. The arm BC is made up of the semiconductor. The experiment is being conducted at $2 5^{\circ} C$ … Includes diagram
Physics · Electronic Devices · MCQ
Q77.Conductivity of a photodiode starts changing only if the wavelength of incident light is less than $(\frac{X}{8}) eV$ . The band gap of photodiode is found to be $(\frac{X}{8}) eV$ . The value of $X$ is…
Physics · Dual Nature of Radiation · MCQ
Q78.A transformer has an efficiency of $80%$ and works at $4 kW$ and $240 V$ . If the secondary voltage is $240 V$ , then the current in the secondary coil is :
Physics · Electromagnetic Induction · MCQ
Q79.In an ammeter, $5%$ of the main current passes through the galvanometer. If resistance of the galvanometer is $G$ , the resistance of ammeter will be :
Physics · Current Electricity · MCQ
Q80.A disc of radius $R$ and mass $M$ is rolling horizontally without slipping with speed $v$ . It then moves up an inclined smooth surface as shown in figure. The maximum height that the disc can go up the incline is : Includes diagram
Physics · Rotational Motion · MCQ
Q81.A mass $m$ is suspended from a spring of negligible mass and the system oscillates with a frequency $f_{1}$ . The frequency of oscillations if a mass $f_{2}$ is suspended from the same spring is $f_{2}$ . The value of $\frac{f _{1}}{f _{2}} i$ …
Physics · Simple Harmonic Motion · Numerical
Q82.In an electrical circuit drawn below the amount of charge stored in the capacitor is $μ$ C. Includes diagram
Physics · Capacitor · Numerical
Q83.A particle initially at rest starts moving from reference point $x = 0$ along $x$ -axis, with velocity $v$ that varies as $v = 4 x m / s$ . The acceleration of the particle is $ms^{- 2}$ .
Physics · Motion in A Straight Line · Numerical
Q84.Suppose a uniformly charged wall provides a uniform electric field of $2 \times 1 0^{4} N / C$ normally. A charged particle of mass $20 cm$ being suspended through a silk thread of length $20 cm$ and…
Physics · Electrostatics · Numerical
Q85.A moving coil galvanometer has 100 turns and each turn has an area of $2.0 cm^{2}$ . The magnetic field produced by the magnet is $10 mA$ and the deflection in the coil is 0.05 radian when a current of $10 mA$ …
Physics · Magnetics · Numerical
Q86.One end of a metal wire is fixed to a ceiling and a load of $1 kg$ hangs from the other end. A similar wire is attached to the bottom of the load and another load of $1 kg$ hangs from this lower wire. Then the ratio of…
Physics · Properties of Matter · Numerical
Q87.In Young's double slit experiment, monochromatic light of wavelength 5000 Å is used. The slits are $1.0 m$ apart and screen is placed at $1.0 m$ away from slits. The distance from the centre of the screen where…
Physics · Wave Optics · Numerical
Q88.A coil of 200 turns and area $0.20 m^{2}$ is rotated at half a revolution per second and is placed in uniform magnetic field of $0.01 T$ perpendicular to axis of rotation of the coil. The maximum voltage generated in the…
Physics · Electromagnetic Induction · Numerical
Q89.A uniform rod $A B$ of mass $30 cm$ and length $0.2 Ns$ at rest on a smooth horizontal surface. An impulse of force $0.2 Ns$ is applied to end B. The time taken by the rod to turn through at right angles will be…
Physics · Rotational Motion · Numerical
Q90.A particular hydrogen-like ion emits the radiation of frequency $3 \times 1 0^{15} Hz$ when it makes transition from $n = 2$ to $n = 1$ . The frequency of radiation emitted in transition from $n = 3$ to $n = 1$ is $\frac{x}{9} \times 1 0^{15} Hz$ …
Physics · Atoms and Nuclei · Numerical