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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Quick Revision Notes for Class 10 Science Chapter 6 Life Processes
Last modified on:3 years agoReading Time:31MinutesQuick Revision Notes for Class 10 Science Chapter 6 Life Processes Quick revision notes are a summarized form of study material that condenses the most important information from a larger body of text. They are designed to help students review and retain key concepts, facts, and ideas in a short amount…
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Class 10 Physics Light Important Questions
Last modified on:5 years agoReading Time:15MinutesVery Short Answer Questions [1 marks] 1. Define lens.Ans. A piece of optical material bounded by one or two spherical surfaces is called lens. 2. Why is a convex lens called converging lens? Ans. It is because a parallel beam of light on passing through it converges at a point. 3. Define…
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Class 10 Physics Light (NCERT Solution)
Last modified on:5 years agoReading Time:8MinutesNCERT QUESTIONS WITH THEIR ANSWERS IN-TEXT QUESTIONS Page 168 1. Define the principal focus of a concave mirror. Ans. A point in front of a concave mirror, on its principal axis, such that parallel rays travelling parallel to the principal axis, after reflection actually converge at this point. 2. The radius…
