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ASSOCIATION OF ODISHA CHHATTISGARH leSE SCHOOLS I.C.S.E MODEL EXAMINATION -2016 PHYSICS SCIENCE PAPER - I TIME DURATION - 2 Hours Answer 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 papers. The time given at the head of this paper is the time allowed for writing the answers. Section - I is compulsory. Attempt any four questions from Section-II. The intended marks for questions or part of questions are given in brackets. [ ] SECTION-I [40 MARKS] Attempt all the questions from this section. ~n:l W"- Write down the gravitational [2] unit afforce? How-is it related to Newton? mechanic can open a nut by applying a force of 150 N while using a lever handle of length 40cm. How long handle is required if he open it by applying a force of only 50 N. r 2,..0 c '"t'" [2] ~quare cardboard is suspended by passing a pin through a narrow hole at its one corner. Draw a dic:~"3~ to show its rest position. In the diagram mark the point of suspension by the _Jetter S and Centre of gravity by the letter G. [2] ~ td( [2] Give two differences between centripetal and centrifugal force. (/The [21 hand flour grinder is provided with a handle near its rim. Give reason. ~ion:2 W~ is the relationship between the mechanical advantage and velocity ratio for (An ideal machine. (ii A practical machine. [2] (1)V ~l)ith (~/In (d) ~ [2] class of lever found in the human body is used by a boy, {f} J When he holds a load on the palm of his hand. (U{ When he raises the weight of his body on his toes. [2] what direction the force need to be applied, when a single pulley is used with a mechanical advantage greater than one? What kind of energy conversion takes place in AC generator? A body of mass 5 Kg is moving with a velocity of 10ms 1, What will be the ratio of its initial Kinetic energy and final Kinetic energy, if the mass of body is doubled and velocity is halved? Contd 2. c. \ [2] What is the 5.1 unit of energy? How is the electron volt (ev) related to it? ICS.E ModelExam 201~ Physics [2] Pg 2 Page 1
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