What is mitosis? Cell division is the driving process of reproduction at the cellular level. Most eukaryotic cells divide in a manner where the ploidy or the number of chromosomes remains the same, except in the case of germ cells where the number of chromosomes is halved. Definition of Mitosis: “Mitosis is that step in … Read more
What does pattachitra mean? Pattachitra means, painting or cloth-Chitra in Sanskrit, is a generalized term used to describe a style and format of painting with origins in Odissa (now Odisha) in west Bengal. Themes are chiefly on Lord Jagannath and Radha-Krishna, different “Vesas” of Shri Jagannath, Balabhadra and Subhadra, temple activities, the ten incarnations of … Read more
Saturated and Unsaturated Vapour Pressure What is a saturated solution? If in a water sugar solution, the amount of dissolved sugar is equal to the maximum amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is an unsaturated solution? If in a … Read more
Astronomy Notes for Class 11-12 Explain the mystery of the origin of our universe From the beginning of recorded history, it is seen humans expressed different theoretical notions about the origin and fate of our universe. At present, this branch of science is called cosmology. The branch of physics which discusses the nature, source, and … Read more
Semiconductor and Electronics Notes for Class 11 – 12 Learning Outcomes Explain band theory of solid materials Explain conductor, non-conductor, and semiconductor by band theory Explain intrinsic and extrinsic semiconductors Explain the concept of electron and hole in semiconductors Explain the p-type and n-type semiconductor Explain the construction and function of the junction diode Explain … Read more
Atomic Model and Nuclear Physics
Introduction to Modern Physics for Class 11 -12 Frame of Reference The coordinate system in a three dimensional space with respect to which we can describe the motion of an object is called frame of reference. Inertial Frame of Reference The frame of references moving with constant velocity to each other in which Newton’s law … Read more
Physical Optics Notes for Class 11 – 12 Poynting vector The amount of energy passing through unit area placed perpendicular to direction of a electromagnetic wave propagating is called poynting vector. Wave front At any moment, locus of particles on a wave which are in phase is called wave front. Plane wave front Locus of … Read more