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I *! / ^51 1"'''/ / r /v MAR ATHANASIUS INTERNATIONAL SCHOOL KOTHAMANGALAM SECOND MODEL EXAMINATION 2016.17 GRADE X B MAXIMUM MARKS:80 TIME:2hrs PHYSICS SCIENCE Paper -1 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 the questions from Section I and any four questions from Section il. The intended marks for questions or parts of questions are given in brackets t ]. SECTION I (40 Marks) . Attempt all questions from this Section.[Each carries 2marksJ Question:1 (a) (a) Write down the gravitational unit of force. How is it related to Newton? (b) Give an example when work done by the force of gravity acting on a body is zero even though the body gets d'isplaced from its initial position. (c) Classify the following into levers as class l, class ll or class lll: 1. A spade turning soil 2.Foot treadle 3. Nut cracker 4.Shears (d) Whe:'= is the centre oJ gravity of the foltowing objects situated? i. R!ng 2.Rhombus 3.Scalene triangte 4.Solid cone. \
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