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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. How does the effect of force differ in the two following cases? [2] A force is applied on(i) a rigid body and (ii) non-rigid body. b. Whenever force is applied, will the work be done? Support your answer with an example. [2] c. Differentiate between ideal machine and actual machine. [2] d. State the transformation energy taking place [2] (i) washing machine. (ii) charging cell e. How fast should a man of mass 60 kg run so that his KE is750 J? [2] Question 2 a. Scissors for cutting cloth have blades much longer than the handles; but shears for cutting metals have short blades and long handles.Explain why? [2] b. Give two reasons why the efficiency of a single movable pulley system is not 100%. [2] c. A body of mass 50 kg has a momentum of 3000 kgm/s. Calculate the KE of the body. [2] 1 ICSE (Grade : X) | PHYSICS (SCIENCE Paper-I) | Pre Board Exam-1
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