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# ICSE Prelims 2016 : Science (Anand Niketan, Ahmedabad)

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 Sanhit Mehta Anand Niketan, Shilaj, Ahmedabad
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ANAND NIKETAN SCHOOL - SHILAJ PAPER-1 SUBJECT PHYSICS STD:- X DATE:-____/_____/__ M.M:-80 Marks DURATION:-2Hrs. (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time) SECTION-I (Compulsory: To be attempted by all candidates) [40 Marks] Question:1. (a) (b) (c) (d) (e) How is the acceleration produced in a body of given mass related to the force applied on it? [2] A tennis ball and a table tennis ball have same momentum. Which of the two has more kinetic energy and why? [2] In the following cases write yes if the work is being done and no, if no work is being done. (i) A man trying to push a wall. (ii) A man moving on the rough ground. (iii) A coolie standing with a heavy load on his head. (iv) A boy climbing up a staircase. [2] When an arrow is shot from its bow, it has kinetic energy. From where does it get the kinetic energy? [2] State two reasons, why the efficiency of a pulley system is not 100%. [2] Question:2. (a) (b) (c) (d) (e) Draw ray of light bending towards the normal while passing from(i) air to glass, (ii) glass to water. Label your diagrams. [2] In What condition a prism is said to be in the position of minimum deviation? What is the direction of the refracted ray inside the prism in this condition? [2] Define power of a lens . [2] What happens to the image formed by a convex lens if its lower part is blackened? [2] State two uses of ultraviolet radiations. [2] Question:3. (a) (b) (c) (d) (e) What is the voltage and frequency of the electricity that is generally supplied to a house? [2] A given wire is stretched to double its length. How will its resistance change? [2] What are non ohmic conductors? Give one example. Draw a current voltage graph for a non ohmic conductor. [2] Why is the filament in an electric bulb coiled? [2] State the purpose served by the terminals of a three pin plug. [2] Question:4. (a) (b) (c) (d) (e) Calorimeter are made of copper, Explain the reason. Explain the statement: The specific latent heat of vaporization of water is 2260 x 103 J/kg . What are the types of emission? What are cathode rays? Why are they called cathode rays ? How does the position of an element change in the periodic table when it emits out an alpha particle? SECTION-II (Answer any four questions from this section) [2] [2] [2] [2] [2] [40 Marks] Question:5. (a) A bullet of mass 50g is moving with a velocity of 500 m/s. It penetrates 10 cm into a target and comes to rest. (i) Calculate the KE possessed by the bullet. (ii) The average retarding force offered by the target. [4] Page 1 of 3

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