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SCIENCE Paper 1 ( Physics ) Answer to this paper must be written on the paper provided separately. You will NOT be allowed to write during the 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. The question paper is divided into two sections. Section I contains four questions. All the four questions are to be answered. Section II contains six questions numbered 5 to 10. You have to answer any four of these questions. CLASS 10 Sections I (40 Marks). Attempt all the questions from this section. Question 1 a. b. c. d. (5x2=10) What do you mean by the following statements i. The specific latent heat of vaporization of water is 2.26x106 ii. Write any two ways to minimize global warming. A certain quantity of ice at 0oC is heated uniformly till it changes into steam at 100oC. Draw a time temperature heating curve to represent it. Label the two phase changes in your group. How does the deviation produced by a triangular prism depend on the colour of light incident on it? Why is a commutator necessary for continuous rotation of the coil?
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