Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
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NEET Biology The Living World (Exercise-1)
Last modified on:5 years agoReading Time:17MinutesNEET Biology The Living World Exercise-1 Q.1 Most acceptable concept of species is – (1) Static concept (2) Biological concept (3) Typological concept (4) Genetic concept Q.2 Artificial system of classification classifies plants on the basis of – (1) One or two characters (2) Phylogenetic trends (3) Many naturally existing characters (4)…
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Friction (Self Evaluation Test)
Last modified on:8 years agoReading Time:1Minute
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CBSE 10 Science Ch- 15 Our Environment (NCERT Solution)
Last modified on:5 years agoReading Time:5MinutesNCERT Solution Chapter- 15 Our Environment Page No. 1. Why are some substances biodegradable and some non-biodegradable? Answer: Substances which can be acted upon by microorganism (decomposer) are called biodegradable. For example- vegetable wastes, paper, cotton etc. On the other hand, materials which are not acted upon by decomposers are called…
