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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Metals & Non-Metals (NCERT SOLUTION)
Last modified on:5 years agoReading Time:1Minute
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Metals & Non-Metals (NCERT SOLUTION)
Last modified on:5 years agoReading Time:10MinutesQuestion 1: Which of the following pairs will give displacement reactions? (a) NaCl solution and copper metal (b) MgCl2 solution and aluminium metal (c) FeSO4 solution and silver metal (d) AgNO3 solution and copper metal. Answer: (d) AgNO3 solution and copper metal Question 2: Which of the following methods is suitable…
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Gravitation (NEET)
Last modified on:5 years agoReading Time:1MinuteTEST PAPER No. of Questions: 40 Maximum Marks: 160
