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GOKULDHAM HIGH SCHOOL &JUNIOR COLLEGE SECONDARYSECTION (2023-2024) PRELIMINARY EXAMINATION SUBJECT:PHYSICS(SCIENCE PAPER ) coHAA ALLOCuIE MARKS: 80 GRADE: 10 DATE: 16.01.2024 TIME: 2hours Answers to this Paper must be written on the paper provided separately. Youwill not be allowed to write during 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 A iscompulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [| This paper consists of 11 pages SECTION A (Attempt all questions from this section) Question 1 Choose and write the correct answers to the questions from the given options: [15) (Do not copy the question, write the correct answers only) (i) What provides the necessary centripetal force when an electron moves around the nucleus? a) Gravitational force b) Electrostatic force c) Magnetic force d) Nuclear force (ii) Work done is negative when a) force causes displacement in its own direction b) force causes displacement at an acute angle c) force causes displacement in opposite direction d) force causes displacement in perpendicular direction (ii) The algebraic sum of moments of weight of all the particles constituting the body about its centre of gravity is a) zero b) positive c) negative d) greater than equal to zero 1
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