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ICSE Class X Board Exam 2018 : Physics

10 pages, 12 questions, 1 questions with responses, 1 total responses,

Nandhana
Chavara Public School, Pala
Class 11, 12 PCMB

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PHYSICS SCIENCE Paper 1 (Two hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the Question Paper. The time given at the head of this Paper is the time allowed for writing the answers. Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) (i) State and define the S.I. unit of power. [2] (ii) How is the unit horse power related to the S.I. unit of power? (b) State the energy changes in the following cases while in use: [2] (i) An electric iron. (ii) A ceiling fan. (c) The diagram below shows a lever in use: [2] Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever? Turn over

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