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Pre Board I Examination / Grade X / PHYSICS / 25th November, 2024 / Monday/ Morning _______________________________________________________________________________________ Maximum Marks: 80 Time allowed: two hours Ms. Neelam Rawat / Mr. Rajeev Rana: 45 _______________________________________________________________________________________ Answers to this paper must be written on the paper provided separately. You will not be allowed to write during the first 15 min. 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 is compulsory. Attempt any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. _______________________________________________________________________________________ SECTION A (Attempt all questions from this Section.) Question 1 Choose the correct answers to the questions from the given option: (i) [15] S is a radioactive source emitting , and -radiations. Y is a sheet of aluminium 2 cm thick placed 10 cm from S. Which radiations can be detected at G? a) only b) and only c) and d) only (ii) Gamma rays have frequency . that of X rays. a) Equal to b) Larger than c) Smaller than d) Both (a) and (c). Page 1 of 10
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