Set is a defined as a collection of objects. Set of Natural numbers, N = {1,…
Day: June 13, 2022
Light – Reflection and refraction
Reflection Laws of reflection Spherical mirrors Properties of image formed by a plane mirror Problems based…
Determination of atomic mass
Atomic mass can be determined by applying the following formula. Atomic mass = (w1A1 + w2A2)/(w1+w2)…
Lines and angles – Summary
If a ray stands on a line, then the sum of the two adjacent angles so…
STD09 Topics
Maths Number system Polynomials Coordinate geometry Linear equations Introduction to Euclid’s geometry Lines and angles Triangles…