Entropy, the measure of a system’s thermal energy per unit temperaturethat is unavailable for doing useful work. Because work is obtained from ordered molecular motion, the amount of entropy is also a...
Acceleration due to gravity and its variation with altitude, depth and rotation of earth I. Expression for acceleration due to gravity: Consider earth to be a sphere of radius 'R' and mass 'Me'....
Electrophilic Aromatic Substitution Note why we’re calling it substitution: we’re breaking C-H and we’re forming a different bond at C (e.g. Cl, Br, N, S, C, etc.) Here’s...
The First law of motion of Newton give us powerful tools to analyze forces and solve problems. First Law : Statement If a body has a number of forces F1,F2, F3 ...Fn acting on it it will remain...
(i) What is the relation between critical angle and refractive index of a material ? (ii) Does critical angle depend on the colour of light ? Explain. ANSWER (i) Refractive index = 1/sin C where C...