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1 × concave and convex parabolic reflectors 1 × total internal reflection 1 × problems on mirrors inclined at an angle 1 × location of images formed 1 × speed of sound by echo method 1 × period time 1 × methods of making magnets 1 × images formed by plane minors 1 × dispersion of light 1 × primary and secondary cells 1 × local action 1 × laws of refraction 1 × elastic potential energy 1 × pascals principle 1 × types of forces 1 × density of substances 1 × pressure in solids 1 × trans- saharan trade 1 × pressure in liquids 1 × mass weight and their relationship 1 × maximum and minimum pressure 1 × daniel arap moi 1 × lives and contributions of kenyan leaders 1 × remedies for food shortages 1 × urban centres in kenya 1 × urban settlement 1 × factors affecting settlement 1 × types of settlement 1 × energy conservation 1 × hydroelectric power

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