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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Assertion and Reason Questions for Class 11 Physics Chapter 15 Waves
Last modified on:4 years agoReading Time:22Minutes Assertion and Reason Questions for Class 11 Physics Chapter 15 Waves Directions: (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is…
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Assertion and Reason Questions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids
Last modified on:4 years agoReading Time:13MinutesAssertion and Reason Questions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids Directions:(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion…
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Assertion and Reason Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids
Last modified on:4 years agoReading Time:9MinutesAssertion and Reason Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids Directions:(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion…
