The wave mechanical model of atom comes from wave equation. The wave equation describes the electron in motion as a three dimensional wave. This was given by Schrodinger x, y, z are Cartesian coordinates m is mass of electron. V is potential energy of electron E is total energy of electron h is Planck’s constant. Read more about Quantum Mechanical Model[…]
The principle states that “when a body is partially or completely immersed in a fluid, it experiences a buyont force (upthrust) due to which it appears lighter, the apparent loss in the weight of body is equal to the weight of the liquid displaced”. Proof of Archimedes’ Principle: Consider a cubical block ABCDEFGH of face Read more about Archimedes’ Principle[…]
Bohr’s atomic Theory It is based on the application of quantum theory of radiation. Postulates:- 1. The electrons revolve around the nucleus with definite velocity in certain fixed closed paths called orbits. There are numbered as 1, 2, 3, 4…… (Or) K, L, M, N from the Nucleus. 2. The angular momentum of electron is an Read more about Bohr’s Atomic Theory[…]
Typical particle (at a point P) of the rigid body rotating about a fixed axis (taken as the z – axis). The particle describes a circle with a centre C on the axis. The radius of the circle is r, the perpendicular distance of the point P from the axis. We also show the linear Read more about Angular Velocity and its relation with linear velocity[…]
To find the equivalent resistance between A and B.After marking the junction Hence equivalent resistance between A and B is RAB = 3R/5. Nodal analysis: To find the current distribution in armsTo solve this one must assume the potential of one node equal to zero and then corresponding other potentials as marked in following diagramThe solving equation for Read more about Circuit Solution Methods (By Examples)[…]
Group IIA Elements: Beryllium (Atomic number – 4) Magnesium (Atomic number – 12) Calcium (Atomic number – 20) Strontium (Atomic number – 38) Barium (Atomic number – 56) Radium (Atomic number – 88) Have 2 electrons in the outermost orbit. By loosing two electrons they form stable + 2 ions. They are divalent and show Read more about Explanation Of S – Block (Group II A Elements)[…]
S.No. Change or name of the process Isobaric Isochromic Isothermal Adiabatic 1. Definition P = Constant V = Constant T = Constant a) Q = Constant b) Entropy S = Constant 2. dQ 1. For solids dQ = mcpdT For gases ncvDt 2. For change in state dQ = mL 1. For solids dQ = mcvdT Read more about Different Types Of Thermodynamic Process At A Glance[…]
Group I A Elements: Hydrogen (Atomic number – 1) Lithium (Atomic number – 3) Sodium (Atomic number – 11) Potassium (Atomic number – 19) Rubidium (Atomic number – 37) Strontium (Atomic number – 55) Francium (Atomic number – 87) Elements of group I A and II A are known as s – block elements. Except Hydrogen Read more about Explanation Of S-Block (Group IA) Elements[…]
Free Vibrations: If a given body is once set into vibrations and then let free to vibrate with its own natural frequency, the vibrations are said to be free vibrations. The natural frequency of free vibrations depends on the nature and structure of the body and in ideal situation, the amplitude, frequency and the energy Read more about Free, Forced, Damped and Resonant Vibrations[…]
Hello MyRank Viewers, here are Some Important Qualitative Analysis Tests and Results 1. CHARCOAL CAVITY TEST: Residue Metallic Bead Inference Yellow when hot, white when cold Zn2+ Brown when hot, yellow when cold Green bead, Makes the paper black Pb2+ No characteristics residue Red beads / scales Cu2+ White residue, glows on heating Ba2+/ Sr2+/ Read more about Some Important Qualitative Analysis Tests And Results………[…]