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# ICSE Board Exam 2003 : Physics

5 pages, 52 questions, 50 questions with responses, 110 total responses,    0    0
 ICSE Indian Certificate of Secondary Education (ICSE), New Delhi
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SCIENCE Paper 1 (Physics) - 2003 (One hour and a half) 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. Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brakets [ ]. S ECTION I (40 Marks) Attempt all questions from this Section Question 1 [4] (a) (i) What is the relationship between the mechanical advantage and the velocity ratio for: (1) An ideal machine; (2) A practical machine? (ii) Which physical quantities do the following units represent? (1) Dioptre; (2) Kelvin. (b) (i) The weights of two bodies are 2.0 N and 2.0 kgf respectively. What is the mass of each body? (g = 10 ms 2) (ii) If the power of a motor is 40 kW, at what speed can it raise a load of 20,000 N? (c) (i) State the law of floatation. (ii) A cube of ice whose side is 4.0 cm is allowed to melt. The volume of the water formed is found to be 58.24 cm3. Find the density of ice. (d) (i) Does land cool at a slower or faster rate than water? Give one reason for your answer. (ii) Explain, why steam pipes warm a building more effectively than hot water pipes in cold countries. (e) (i) A ray of light, after refraction through a concave lens, emerges parallel to the principal axis. Draw a ray diagram to show the incident ray and its corresponding emergent ray. (ii) The velocity of light in diamond is 121,000 kms 1. What is its refractive index? (Velocity of light in air is 3 108 m/s)

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Additional Info : Solved ICSE Board exam paper study guide - ICSE 2003 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper
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