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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NEET Elasticity Important Questions
Last modified on:5 years agoReading Time:2MinutesCheck important questions and answers for NEET Exam. Practice these questions to improve your concepts and perform better in the actual test. These questions for NEET designed by GURUKUL is one of the best and complete study material as it covers all the important questions from the chapters which are in syllabus. We have…
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Numerical on Power of a Lens for CBSE Class 10
Last modified on:5 months agoReading Time:28MinutesUnderstanding the Power of a Lens: Concepts, Formulas, and Numericals When studying optics, understanding how a lens bends light is crucial. Whether you are dealing with a simple magnifying glass or complex optical instruments, the ability of a lens to converge or diverge light rays is measured by its Power. Here…
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Numerical on Refraction of Light for CBSE Class 10
Last modified on:5 months agoReading Time:18Minutes Numerical Problems on Refractive Index Class 10 Science · Light – Reflection and Refraction N Refractive Index & Snell’s Law Practice Set 1 Apply the formulas $n = \frac{c}{v}$ and $\frac{\sin i}{\sin r} = \frac{n_2}{n_1}$ Ch 10 · Light 1 Light travels through water with a speed of $2.25 \times…
