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# ICSE Board Exam 2004 : Physics

5 pages, 56 questions, 53 questions with responses, 70 total responses,    0    0
 ICSE Indian Certificate of Secondary Education (ICSE), New Delhi
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SCIENCE Paper 1 (Physics) - 2004 (One hour and a half) S ECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) (i) Explain why scissors for cutting cloth may have blades much longer than the handles; but shears for cutting metals have short blades and long handles. [2] (ii) A woman draws water from a well using a fixed pulley. The mass of the bucket and water together is 6.0 kg. The force applied by the woman is 70 N. Calculate the mechanical [2] advantage. (Take g = 10 m/s2) (b) (i) State the energy changes in an oscillating pendulum. [2] (ii) Two balls of mass ratio 1 : 2 are dropped from the same height. 1. State the ratio between their velocities when they strike the ground. [1] 2. The ratio of the forces acting on them during motion. [1] (c) (i) A piece of ice floating in a glass of water melts but the level of water in the glass does not change. Explain this phenomenon. [2] (ii) An inflated gas balloon is placed in a jar which is connected to an evacuating pump. What will be observed if the air inside the jar is pumped out? Give a reason justifying your answer. [2] (d) (i) Define 'critical angle.' [2] (ii) A ray of light passes through a right angled prism as shown in the figure. State the angles of incidence at the faces AC and BC. [2]

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Additional Info : Solved ICSE Board exam paper study guide - ICSE 2004 : SCIENCE Paper 1 (Physics) - I.C.S.E. Free Online Question Paper
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