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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Case Study and Passage Based Questions for Class 9 Science Chapter 5 The Fundamental Unit of Life
Last modified on:2 years agoReading Time:5MinutesCase Study/Passage Based Questions: Question 1: Study the given diagram of bacterial cell and answer any four questions from (i) to (v). (i) Label the parts marked 1, 2, and 3.(a) 1- Nucleus, 2-Cell wall, 3- Plasma membrane.(b) 1-Cell wall, 2- Nucleoid, 3- Plasma membrane.(c) 1- Cytoplasm ,2- Nucleus, 3- Cell…
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Term 2 Sample Papers for Class 12 Physics
Last modified on:4 years agoReading Time:3MinutesTerm 2 Sample Papers for Class 12 Physics Here we are providing term 2 sample papers for class 12 physics. This paper is prepared according to the latest sample paper prescribed by CBSE for term 2 exams. Practicing sample papers before exams students get to know their shortcomings and while working…
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MCQ Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation
Last modified on:4 years agoReading Time:10MinutesMCQ Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation Here we are providing mcq questions for class 12 biology chapter 15 biodiversity and conservation. These questions on biodiversity and conservation is prepared by subject expert. Students can practice these questions to score better marks in their exams. Q.1. The…
