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ISC Class XII Board Exam 2025 : Computer Science

4 pages, 34 questions, 0 questions with responses, 0 total responses,

Rishika Sarkar
Our Lady Queen of the Missions School (OLQMS), Salt Lake City, Kolkata

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PHYSICS PAPER 2 (PRACTICAL) (Maximum Marks: 30) (Time allowed: Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) ---------------------------------------------------------------------------------------------------------------ALL ANSWERS MUST BE WRITTEN IN THE ANSWER BOOKLET PROVIDED SEPARATELY. rin di a. co m If squared paper is used, it must be attached to the answer booklet. Marks are given for a clear record of observations actually made, for their suitability and accuracy, and for the use made of them. Statement of the theory, procedure of the experiment, apparatus, circuit diagrams, precautions are not required to be written unless specifically asked for. Candidates are advised to record their observations as soon as they have been made. All working, including rough work, should be done on the same sheet as, and adjacent to, the rest of the answer. Mathematical tables and squared paper are provided. The intended marks for questions or parts of questions are given in brackets [ ]. Note: Procedure of the Experiment, ray diagram, circuit diagram and precautions are not to be written in your answer booklet. ---------------------------------------------------------------------------------------------------------------- Question 1 .c a re e Answer all questions. You should not spend more than one and a half hours on each question. [9] w w This experiment determines the focal length of the given convex lens by no parallax method. You are provided with: (a) Two optical pins A convex lens A lens holder An optical bench Note: If an optical bench is not available, the experiment may be performed on a table top, using a metre scale. w (b) (c) (d) ---------------------------------------------------------------------------------------------------------------This Paper consists of 4 printed pages. 1219-861B Turn over Copyright reserved.

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