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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Human Eye & Colourful World (Numerical with Answer)
Last modified on:5 months agoReading Time:14MinutesHere we are providing numerical assignment on class 10 science chapter human eye and colourful world. Answers are also provided for reference. Numerical Problems Based on Human Eye and Colourful World Q.1. If the concave lens of focal length (f = 1.5m) used to restore the proper vision, then what is…
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CBSE Class 10 Human Eye & Colourful World NCERT Solution
Last modified on:5 years agoReading Time:11Minutes Human Eye & Colourful World (NCERT solution) Q. 1. What is meant by power of accommodation of the eye? Ans. The ability of the eye lens to adjust its focal length is called power of accommodation of the eye. This enables us to see distant objects and nearby object clearly.…
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Questions on Kinematics
Last modified on:5 years agoReading Time:24MinutesQ1. A man travels a distance of 1.5 m towards East, then 2.0 m towards South and finally 4.5 m towards East. i. What is the total distance travelled? ii. What is his resultant displacement? Q2. A scooterist covers a distance of 3 kilometers in 5 minutes. Calculate his speed in…
