Quantum numbers are numerical values that describe the properties of atomic orbitals and the electrons in those orbitals. They are essential for understanding the arrangement of electrons in atoms and the resulting chemical behavior of elements. There are four primary quantum numbers: principal (n), azimuthal (l), magnetic ($m_l$), and spin ($m_s$). Here is the chart […]
Quantum Numbers Chart Read More »
The electronic configuration of elements is based on the arrangement of electrons in shells or energy levels around the nucleus. Here are the electronic configurations for elements 1 to 30 (Hydrogen to Zinc).It includes the valency of the elements also Remember, the electronic configurations of some elements (like Chromium and Copper) are exceptions to the
Electronic configuration of elements 1 to 30 Read More »
Sound as a Physical Phenomenon We already know from everyday experience that sound is produced by vibrations. When an object vibrates, it sets the surrounding medium into vibration. However, production of sound alone is not sufficient. For us to hear sound, it must travel from the source to the listener. This immediately leads us to
Why Sound Cannot Travel in Vacuum Read More »
Sound Is Observed Only When Something Moves We notice a clear pattern in daily life: However, when these objects are at rest, no sound is heard. A bell kept untouched or a book lying still on a table remains silent.This leads to an important question: why is sound heard only when there is motion? Vibration
How does vibration produce sound? Read More »
JEE Main syllabus has been matched with CBSE syllabus. Here is the current syllabus for 2026 JEE Main Mathematics Syllabus: Sets, Relations, Functions Sets and their representation: Union, intersection, and complement of sets and their algebraic properties; Power set; Relation, Type of relations, equivalence relations, functions; one-one, into and onto functions, the composition of functions.
JEE Main Syllabus for 2026 : Physics, Chemistry & Maths Read More »
Question 1: What is the new scheme of engineering entrance examination ? Answer It has been decided to hold a Joint Entrance Examination (JEE) from the year 2013 for admission to the undergraduate Programmes in Engineering in two parts, JEE-MAIN and JEE-ADVANCED. Only the top 250000 candidates based on performance in JEE MAIN will qualify
Frequently Asked Questions about JEE (Main) 2026 Read More »
Students often think that It is important to go to coaching classes to clear the JEE Main and JEE Advanced examinations. There is no doubt that Coaching classes do make education easy with knowledge being imparted by professional tutors. But it is not the only thing for success. Self-study plays a major role in succeeding
Tips and Tricks to crack JEE 2026 without coaching Read More »
Introduction Important Criteria sheet Program Eligibilty Criteria Admission Criteria Duration (Yrs) B. Tech. (1) Exam Pathway (up to 80% Seat distribution) – (1) Minimum 50% marks at Higher & Senior Secondary level (10th & 12th) (2) Minimum 50% aggregate in Physics, Chemistry & Mathematics at Senior Secondary level(12th) (2) Non-Exam Pathway (up to 20% Seat
UPESEAT 2026 Information, eligibility & Exam dates Read More »
