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IIT JEE (Advanced) 2018 : Paper 1 (Solved with Answer Key)

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JEE (Advanced) 2018 Paper 1 JEE (ADVANCED) 2018 PAPER 1 PART-I PHYSICS SECTION 1 (Maximum Marks: 24) This section contains SIX (06) questions. Each question has FOUR options for correct answer(s). ONE OR MORE THAN ONE of these four option(s) is (are) correct option(s). For each question, choose the correct option(s) to answer the question. Answer to each question will be evaluated according to the following marking scheme: Full Marks : + If only (all) the correct option(s) is (are) chosen. Partial Marks : + If all the four options are correct but ONLY three options are chosen. Partial Marks : + If three or more options are correct but ONLY two options are chosen, both of which are correct options. Partial Marks : + If two or more options are correct but ONLY one option is chosen and it is a correct option. Zero Marks : 0 If none of the options is chosen (i.e. the question is unanswered). Negative Marks : In all other cases. For Example: If first, third and fourth are the ONLY three correct options for a question with second option being an incorrect option; selecting only all the three correct options will result in +4 marks. Selecting only two of the three correct options (e.g. the first and fourth options), without selecting any incorrect option (second option in this case), will result in +2 marks. Selecting only one of the three correct options (either first or third or fourth option) ,without selecting any incorrect option (second option in this case), will result in +1 marks. Selecting any incorrect option(s) (second option in this case), with or without selection of any correct option(s) will result in -2 marks. Q.1 The potential energy of a particle of mass at a distance from a fixed point is given by ( ) = 2 /2, where is a positive constant of appropriate dimensions. This particle is moving in a circular orbit of radius about the point . If is the speed of the particle and is the magnitude of its angular momentum about , which of the following statements is (are) true? (A) = 2 (B) = (C) = 2 (D) = 2 2 1/12

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