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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Chemistry MCQs for Class 11 Chapter 1 Some Basic Concepts of Chemistry
Last modified on:5 years agoReading Time:9MinutesQ.1. Which one of the following sets of compounds correctly illustrate the law of reciprocal proportions?(a) P2O3, PH3, H2O (b) P2O5, PH3, H2O(c) N2O5, NH3, H2O (d) N2O, NH3, H2O Answer (a) In law of reciprocal proportions, the two elements combining with the third element, must combine with each other in…
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NEET Biology Chapter 13 Photosynthesis in Higher Plants
Last modified on:4 years agoReading Time:32MinutesNEET Biology Chapter 13 Photosynthesis in Higher Plants Nearly all of the members (with some exceptions) categorized under the kingdom Plantae are autotrophic in nature. Being autotrophic gives the plants the ability to synthesize their own food for their own nutrition and well being as well as providing a source of…
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MCQ based on Newton’s Law of Gravitation
Last modified on:4 years agoReading Time:6MinutesMCQ based on Newton’s Law of Gravitation Q.1. Newton’s universal law of gravitation applies to(a) small bodies only(b) planets only(c) both small and big bodies(d) only valid for solar system Answer (c) It is applicable to both small & big bodies. Q.2. The value of G varies with(a) height above the…
