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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Case Study and Passage Based Questions for Class 12 Biology Chapter 1 Reproduction in Organisms
Last modified on:4 years agoReading Time:3MinutesCase Study/Passage Based Questions: Question 1: Given below is the diagram of a ginger rhizome. Answer the questions given below based onthe diagram. (i) Why do vegetative propagules in sugarcane and ginger appear from the nodes?(ii) Name the vegetative propagules in (a) Potato, and (b) Pistia.(iii) How does potato multiply? Answer…
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Case Study and Passage Based Questions for Class 9 Science Chapter 9 Force and Laws of Motion
Last modified on:2 years agoReading Time:6MinutesCase Study/Passage Based Questions: Question 1: Read the following and answer any four questions from (i) to (v) given below : In the figure below the card is flicked with a push. It was observed that the card moves ahead while coin falls in glass. (i) Give reason for the above…
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Case Study and Passage Based Questions for Class 9 Science Chapter 8 Motion
Last modified on:2 years agoReading Time:3MinutesCase Study/Passage Based Questions: Question 1: Read the following paragraph and any four questions from (i) to (v). Distance is the length of the actual path covered by an object, irrespective of its direction of motion. Displacement is the shortest distance between the initial and final positions of an object in…
