What is Global Warming? Physics | Grade XII

1. What is global warming? Give two examples of its effect. Ans: Global warming is the increase in the average temperature of atmosphere near the earth surface and oceans. The main cause of global warming is the burning of fossil fuels such as coal, oil and natural gas which releases carbondioxide and other substances known as … Read more

Important Questions Answer of Physics – II | Wave Motion | Grade XII

Wave Motion Short questions answers 1. Differentiate between forced vibration and free vibration. Ans: The free vibration and forced vibration can be differentiated by the following points: i. A body is said to execute free vibration when it is vibrating by itself, while a body is said to execute forced vibration , when it is compelled … Read more

Important Questions Answer of Physics || Grade XII

Nuclear Energy and Other Sources of Energy Short Questions Answer 1. What are renewable sources of energy? Ans: Those sources of energy which can be used continuously for a long time are called renewable sources of energy. Renewable sources of energy are reproduced continuously and can never be exhausted. Such renewable sources of energy are solar … Read more

State Faradya’s lawas of electrolysis – Physics | Grade XII

Important Questions Solved Long Questions Answer state Faraday’s laws of electrolysis. discuss the experiment to verify them. Ans: Faraday’s laws of electrolysis: Faraday summarized the results of many detailed experiments on electrolysis in two laws: First Law: The mass of any given substance which is liberated or deposited as a result of electrolysis is proportional … Read more