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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Physics VSQs for Class 11 with Answers Chapter 12 Thermodynamics
Last modified on:5 years agoReading Time:10Minutes Very Short Answer Type Questions [1 Mark Each] Q.1. Is the heat supplied to a system always equal to the increase in its internal energy? Answer Answer: From 1st law of thermodynamics, dQ = dU + dW If dW = 0, then dQ = dU. i.e. if heat is supplied…
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Physics VSQs for Class 11 with Answers Chapter 10 Mechanical Properties of Fluids
Last modified on:5 years agoReading Time:12MinutesVery Short Answer Type Questions [1 Mark Each] Q.1. When a vessel containing a liquid is falling freely, does Archimedes’ principle hold good in it? Answer Answer: No – because in fall Buoyant force doesn’t exist. Q.2. A block of wood floats in a bucket of water in a lift. Will…
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Motion in 1-D (Revision Notes for JEE/NEET)
Last modified on:5 years agoReading Time:1MinutePOSITION AND FRAME OF REFERENCE DISPLACEMENT AND VELOCITY DISTANCE AND SPEED GRAPHS Applications MOTION UNDER GRAVITY SOME IMPORTANT POINTS: 10 Important Points RELATIVE MOTION IN ONE DIMENSION
