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ICSE Class X Prelims 2021 : Physics (Euroschool Airoli, Mumbai)

6 pages, 58 questions, 21 questions with responses, 21 total responses,    2    0
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PRACTICE PAPER 1 (2020-21) Physics (2hours) Grade: X Max Marks: 80 _____________________________________________________________________ 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. _____________________________________________________________________ Attempt all questions from Section A and any four questions from Section B. All working, including rough work, must be clearly shown and must be done on the same sheet as the rest of the answer. Omission of essential working will result in loss of marks. The intended marks for questions or parts of questions are given in brackets [ ]. _____________________________________________________________________ Section A (40 marks) (Attempt all questions from this section) Question 1 a) A pulley system has five pulleys in all and is 90% efficient. Calculate: [2] (i) the mechanical advantage (ii) the effort required to lift a load of 1000N. b) Is any work done by a force, used to carry hand bag, if the person is [2] walking on: (1) level road? (2) climbing stairs? c) State the law of conservation of energy. [2] d) A ball of mass 200 g falls from a height of 5 m. What will be its kinetic [2] energy when it just reaches the ground? (g = 9.8 ms-2) e) A spring is kept compressed by a small trolley of mass 400 g lying on a [2] smooth horizontal surface as shown in the figure. When the trolley is released, it is found to move at a speed v = 3 ms-1. What potential

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