JEE Main 2021 (Online) 17th March Evening Shift | Atoms and Nuclei Question 105 | Physics

JEE Main 2021 (Online) 17th March Evening Shift

MCQ (Single Correct Answer)

-1

The atomic hydrogen emits a line spectrum consisting of various series. Which series of hydrogen atomic spectra is lying in the visible region?

Brackett series

Balmer series

Paschen series

Lyman series

JEE Main 2021 (Online) 17th March Morning Shift

MCQ (Single Correct Answer)

-1

If an electron is moving in the n^th orbit of the hydrogen atom, then its velocity (v_n) for the n^th orbit is given as :

$${v_n} \propto {1 \over n}$$

v_n $$ \propto $$ n²

v_n $$ \propto $$ n

$${v_n} \propto {1 \over {{n^2}}}$$

JEE Main 2021 (Online) 17th March Morning Shift

MCQ (Single Correct Answer)

-1

Which level of the single ionized carbon has the same energy as the ground state energy of hydrogen atom?

JEE Main 2021 (Online) 16th March Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Calculate the time interval between 33% decay and 67% decay if half-life of a substance is 20 minutes.

40 minutes

60 minutes

13 minutes

20 minutes

PREVIOUS NEXT

JEE Main Subjects

Physics

Mechanics

Units & Measurements Vector Algebra Motion Circular Motion Laws of Motion Work Power & Energy Center of Mass and Collision Rotational Motion Properties of Matter Heat and Thermodynamics Simple Harmonic Motion Waves Gravitation

Electricity

Electrostatics Current Electricity Capacitor Magnetic Effect of Current Magnetic Properties of Matter Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Geometrical Optics Wave Optics

Modern Physics

Atoms and Nuclei Dual Nature of Radiation Semiconductor Communication Systems

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Structure of Atom Redox Reactions Gaseous State Chemical Equilibrium Ionic Equilibrium Solutions Thermodynamics Electrochemistry Chemical Kinetics and Nuclear Chemistry Solid State Surface Chemistry

Inorganic Chemistry

Periodic Table & Periodicity Chemical Bonding & Molecular Structure Isolation of Elements Hydrogen s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry

Organic Chemistry

Basics of Organic Chemistry Hydrocarbons Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry

Mathematics

Algebra

Sets and Relations Logarithm Quadratic Equation and Inequalities Sequences and Series Mathematical Induction Binomial Theorem Matrices and Determinants Permutations and Combinations Probability Vector Algebra 3D Geometry Complex Numbers Statistics Mathematical Reasoning

Trigonometry

Trigonometric Ratio and Identites Trigonometric Equations Inverse Trigonometric Functions Properties of Triangle Height and Distance

Coordinate Geometry

Straight Lines and Pair of Straight Lines Circle Parabola Ellipse Hyperbola

Calculus

Functions Limits, Continuity and Differentiability Differentiation Application of Derivatives Indefinite Integrals Definite Integration Area Under The Curves Differential Equations