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VIBGYOR HIGH Second Preliminary Examination AY 2020-2021 PHYSICS Grade: X Max. Marks: 80 Date: 11/01/2021 Time Allowed: 2 Hours INSTRUCTIONS: 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. The intended marks for the questions or parts of questions are given alongside the questions. Attempt all the questions from section I and any four questions from section II. Section I (40 Marks) Attempt all questions from this section Q1 Answer the following questions: [10] a. A wheel of diameter 2 m is shown with axle at O . A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about: (i) the centre O, and (ii) the point A. 1 [2]
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