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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MCQs (Management of Natural Resources)
Last modified on:5 years agoReading Time:12MinutesQ1. Which of the following is a green house gas? (a) Nitrogen dioxide (b) Sulphur dioxide (c) Carbon dioxide (d) Carbon monoxide Q2. Floods can be prevented by (a) afforestation …
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TEST YOUR SKILLS (Management of Natural Resources)
Last modified on:5 years agoReading Time:3Minutes Q1. The forest is located in a place where villages and tribals are dependent on it. Industrialist is the stakeholder of the forest who is cutting down the trees for profits. What could be the harmful effect of this on forest, local people and environment. Q2. People of locality A…
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Management of Natural Resources (NCERT Questions Solved)
Last modified on:5 years agoReading Time:16Minutes Q1. What changes can you make in your habits to become more environment-friendly? Ans. (i) Do not throw garbage on the road side. (ii) Switch off lights, fans, TV when not required. (iii) Use less water for bathing, washing jobs. …
