CBSE CLASS IX and X SCIENCE MOCK TEST

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CBSE CLASS X SCIENCE CHAPTER ELECTRICITY MOCK TEST

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CBSE CLASS X SCIENCE CHAPTER ELECTRICITY LESSON PLAN 1

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Science is broadly classified into two categories:  Natural Sciences or Real Science                                        Social Science Natural Science is the branch of science which deals with the study of universe (living organisms and non living systems) each and every thing.The law and theories in natural science does not change with place,people and time.So, its a study of  unchanged reality. Example : If an experiment is performed(correctly and accurately) by me or you its result does not change. Social Science is the systematic study of human behaviour and society. It is changing reality. Example: Economy of different countries is different. Initially, Science is studied under Philosophy .  But with the passage of time, as the man acquired more knowledge and experiment to validate facts(philosophy) science is considered as separate subject. ...
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CLASS 12TH PHYSICS EXPERIMENT To determine resistance of a galvanometer by half deflection method and to find its figure of merit.

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To determine resistance of a galvanometer by half deflection method and to find its figure of merit. Aim: To determine resistance of a galvanometer by half deflection method and to find its figure of merit. Apparatus: Moving coil galvanometer , two resistance boxes , two one way keys , connecting wires , sand paper and a battery. Theory: To find resistance of galvanometer (G) Galvanometer of resistance G when connected in series with a resistance R and a battery of emf E , the current is I=E/(R+G) if 𝚹 is the deflection. K 𝚹  =  E/(R+G)   Now such a resistance S is connected in parallel with G , that the deflection becomes half i e 𝚹/2, then     K( 𝚹/2) = E/(R + (GS/(G+S)) Using K 𝚹 in this we have E/(R+G)2 = E(G+S) / R (G + S ) + GS , on solving G = RS/ (R-S) Half deflection method Class 12th Physics Practical To find figure of merits (k) Figure of merit is current per unit deflection i e ,  k=I/ 𝚹 k= I/ ?...
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