The District Third Term Joint Physics Exam Question Paper

The District Third Term Joint Physics Exam

Course:Secondary Level

Exam Year:2010

1. Explain, with the help of a ray diagram, why a total eclipse of the sun (solar) may occur in one area while the observer in a nearby area sees only a partials eclipse(3mks).
2. An ammeter, a voltmeter and a bulb are connected in a circuit so as to measure the current flowing and the potential difference across the bulb. Sketch a suitable circuit diagram for the arrangement. (2mks)
3. Give a reason why the attraction in magnet is not regarded as a reliable method of testing for polarity of a magnet(1mk)
4. What is the advantage of a parabolic mirror over a spherical concave mirror
5. What must be true about the path length if two rays were to interfere constructively?(1mk)
6. A 10µF capacitor is charged by an 80V supply, and then connected across an uncharged 20µF capacitor. Calculate the final potential difference across each.(3mks)
7. Explain why the C.R.O is more accurate device as a voltmeter than a moving coil meter(2mks)
8. Arrange the following radiation in order of their wavelength: infrared, visible light, ultraviolet, radio waves , x-rays.(2mks)
9. Describe briefly an experiment you would carry out to determine index of a liquid.(6mks)

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