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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Chemistry MCQs for Class 11 Chapter – 3 Classification of Elements and Periodicity in properties
Last modified on:6 years agoReading Time:24Minutes Q.1. Periodic classification of elements is used to examine the(a) periodic trends in physical properties of elements(b) periodic trends in chemical properties of elements(c) Both (a) and (b)(d) None of the above Answer (c) Periodic classification of elements follow a logical consequence of electronic configuration of atoms which is used…
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Case Study Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments
Last modified on:4 years agoReading Time:5MinutesCase Study Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments Attempt any 4 sub parts from each question. Each question carries 1 mark. Case Study Question 1: A compound microscope is an optical instrument used for observing highly magnified images of tiny objects. Magnifying power of a…
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Case Study Questions for Class 12 Chemistry Chapter 5 Surface Chemistry
Last modified on:5 years agoReading Time:8MinutesThere is Case Study Questions in class 12 Chemistry in session 2020-21. For the first time, the board has introduced the case study questions in the board exam. The first two questions in the board exam question paper will be based on Case Study and Assertion & Reason. The first question…
