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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MCQ Questions for Class 12 Biology Chapter 5 Principle of inheritance and variation
Last modified on:5 years agoReading Time:13MinutesMCQ Questions for Class 12 Biology Chapter 5 Principle of inheritance and variation Q.1. Test cross involves (a) crossing between two genotypes with dominant trait (b) crossing between two genotypes with recessive trait (c) crossing between two F1 hybrids (d) crossing the F1 hybrid with a double recessive genotype. Answer Answer:…
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Assertion Reason Question Bank for Physics
Last modified on:4 years agoReading Time:6MinutesAssertion-Reason Questions are the most tedious part of the question paper. These questions of paper require conceptual understanding of the topics. This series will help students to overcome the difficulty faced while answering assertion reasoning type questions. This type of questions consists of two statements; an assertion (statement of fact) and a reason. Reason…
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MCQ Questions for Class 12 Biology Chapter 4 Reproductive Health
Last modified on:5 years agoReading Time:12MinutesQ.1. Tubectomy is a method of sterilization in which(a) nucleus is removed (b) ovaries are removed(c) small part of fallopian tube is removed (d) small part of vast deferens is removed Answer Answer: (c) Q.2. Following statements are given regarding MTP. (i) MTPs are generally advised during first trimester(ii) MTPs are…
