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BOMBAY SCOTTISH SCHOOL. MAHIM Preliminary Examination PHYSICS Standard : 10 Date : 14-01-2020 Max. Marks : 80 No. of Questions : 10 Answers to this paper must be written on the answer 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 mentioned above is the time allowed to write the answers. ------------------------------------------------------------------------------------------------------Section I is compulsory. Attempt any four questions from section II. The intended marks for questions or the parts of the question are given in bracket. -------------------------------------------------------------------------------------------------------- Section I [Compulsory] Question 1 a) The diagram below shows the pictures A and B are of nail cutters. Identify the class of each lever. [2] A B b) The diagram below shows a man walking ahead on a levelled road and the corresponding forces acting. From the diagram, name the force i) doing positive work. ii) doing zero work. [2] c) If critical angle of glass for yellow colour is 450, then critical angle of glass for blue colour can be 450 30 . State with a reason whether the above statement is true or false. [2] 1
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