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BEARING AND DISTANCE Compass directions There are four main directions: north (N), south (S), east (E), and west (W). The sun rises in the east and sets in the west. If you face east and turn through an angle of 900 to your left, you will face north. If you face north and turn an […]
Classwork Series and Exercises (Mathematics – JSS2): Bearing and Distance Read More »
LENSES Lenses and curved mirrors are optical instruments designed to focus light in predictable ways. While light striking a curved surface is more complicated than the flat surfaces we have looked at already, the principle is the same. Any given light ray only strikes an infinitesimally small portion of the lens or mirror, and this
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Electric Current An electric charge can be at rest or in motion. We speak of static electricity when the charge is at rest, but when the charge is in motion, it is referred to as current electricity. Electric current, I, is defined as the rate of flow of electric charge along a conductor. A stream
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OPTICAL INSTRUMENTS Magnifiers Perhaps the simplest optical instrument is the lens magnifier. Without optical aid, we cannot “see” things close up. The eye will simply not focus closer than about 0.25 m (unless you are nearsighted!). But an object places just inside the focal point of a converging lens will produce a large virtual image
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Structure of matter A. Evidence of the particle nature of matter The idea that matter is made up of minute particles called atoms dates back to the ancient Greeks. According to the Greek philosopher Democritus, a given piece of substance, say a piece of yam, can be cut into smaller and smaller bits, until eventually
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Like they say, “Bad policies do not last.” Prof. Dibu Ojerinde, Welcome to the 21st century! The Public Relations officer of the Joint Admissions and Matriculation Board, JAMB, Mr. Fabian Benjamin, has announced that the redistribution policy that sees UTME candidates being posted to other higher institutions against their choice has been rescinded. Mr. Fabian
VICTORY! JAMB Rescinds Redistribution Policy Read More »
Literature: Features of a Play Plays have the following features: The speakers’ names are printed in capitals at the beginning of their speech, with a colon following the name. E.g. DANIEL:, TOLU: e.t.c A play may also contain stage directions e.g. (Takes her hand.) These always appear in italics, and in brackets. E.g. DANIEL (He turns
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Candidates of the Unified Tertiary Matriculation Examination who are set to be stopped from writing the forthcoming University of Lagos post-UTME by the Joint Admission and Matriculation Board, are dragging the board to the court today (Friday). According to reports, the affected candidates and their parents will be praying the court to stop further sale
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ESTIMATION AND APPROXIMATION ROUNDING OFF To ’round off’ or ‘approximate’ a number to a desired degree of accuracy, we round the number up if the next digit is 5 or more or we round the number down if the next digit is less than 5. We represent approximately as ‘~’ Examples 73 is close to 70 if approximating to or rounding in “tens”.
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Definition of Electrical Energy Electrical energy is the work done when a quantity of charge moves between two points of potential differences measured in joules. Work done = Quantity of charge x p.d V =w/Q W = QV……………………………………(i) W = Work done, Q = Quantity of charge, V = p.d. across the terminals and we
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