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Reflection and Refraction of Light
access_time 2022-12-03T05:30:55.83Z face Sonika Agarwal
Reflection and Refraction of Light Que - Define focus . If the radius of curvature of mirror is 20 cm find its focal length Que - Define power of lens ? what is its unit? Find the power of lens having focal length 2 m and focal length 50 cm Que -- What is refractive index ? what is its unit ? If ref...
Periodic Classification of Periodic Table
access_time 2022-12-03T04:36:13.902Z face Sonika Agarwal
Periodic Classification of Periodic Table Periodic Classification of Compounds and Trends Important questions Que 1 How many elements are known to us Ans 118 elements are known to us and which 94 are naturally occurring Que 2 What is Dobereiner's Traids Ans In 1817 scientist Dobereiner arrange the e...
Metals Non Metal Class 10
access_time 2022-11-27T19:09:08.082Z face Sonika Agarwal
Metals Non Metal Class 10 Que 1 What is metallic lusture Ans There are some elements which have ability to shine which is termed as metallic lecture these properties are generally found in metals Que 2 What is malleability Ans The ability of metals to be beaten into thin sheets is called malleabilit...
Heredity and Evolution - Summary of Lesson
access_time 2022-11-18T02:50:44.302Z face Sonika Agarwal
Heredity and Evolution - Summary of Lesson Que What is heredity Ans The transmission of genetically based characteristics from parents to the offspring is called heredity Que What are variations Ans Small differences among the individuals of the same species are called variations Que Who discovered ...
Magnetic Effects of Current - Summary of Lesson
access_time 2022-11-17T12:07:33.281Z face Sonika Agarwal
Magnetic Effects of Current - Summary of Lesson IMPORTANT QUESTIONS Que Name the scientist who showed that an electricity and magnetism where related phenomena Ans Hans Christian oersted in 1820 discovered that a compass needle get deflected when an electric current pass through metallic wire in thi...