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PAWAR PUBLICSCHOOL. HADAPSAR, PUNE PRELIMINARY EXAMINATION (2023-2024) SUBJECT -PHYSICS Std.: X Date: 12/01/2024 Max. Marks: 80 Duration: 2 h Answers to this Paper must be written on the paper provided separately. Youwill not be allowed to write during the first 15 minutes. This time is to be spent in the reading Question Paper. The time given at the head of this paper is the time allowed for writing the answers. Section A is compulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in [J. SECTIONA Attempt all questions from this Section. Question 1 Select the correct option for each of the |Do not copy the following questions. question, write the correct answers only.] () [15] M.A. of a machine is independent of which factor? a) The weight of a pulley b) Friction between pulley and string c) The length of the string d) Direction of force (ii) What is the ratio of kinetic energies of two bodies of mass m and 2m moving with the same speed? a) 1:2 b) 2:1 c) 1:4 d) 4:1 (iii) The energy conversion in a dynamo is... a) b) d) Electrical energy to mechanical energy Mechanical energy to electrical energy Chemical energy to mechanical energy Mechanical energy to chemical energy This paper consists of 12 printed pages Turn over
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