Which of the following substances does not conduct electricity?
See more
2011
The change in mass of fuel during a nuclear reaction is 2.0 x 10-27 kg. Calculate the amount of energy released. (Speed of light = 2.0 x 108ms-1)
See more
2011
Uranium-234 disintegrated to form Thorium-230 by emitting
See more
2011
Which of the following properties is not applicable to X-rays? They
See more
2011
For photoelectric emission, the threshold frequency is the
See more
2011
Which of the following practices will lead to losses in electrical power transmission?
See more
2011
Using the circuit diagram above. Calculate the potential difference across the capacitors in parallel
See more
2011
Using the circuit diagram above. Calculate the total charge in the circuit
See more
2011
Nuclear fusion is not used as a source of enegy because
See more
2011
A uniform metre rule is balanced on a fulcrum placed at the 35cm mark by suspending a mass of 120g at the 10cm mark. Calculate the mass of the metre rule.
See more
2011
You are provided with cells, a potentiometer, an ammeter, a voltmeter, a bulb, a key, a jockey, and other necessary materials.Measure and record the emf E of the battery.Set up a circuit as shown in the diagram above.Clo…
See more
2011
In an actual practical exam, a setup will be provided, where you'll use a rectangular glass prism, drawing paper, pins, and a protractor to perform an optics experiment on refraction. The steps include tracing the outlin…
See more
2011
In the actual exam, a setup will be provided, including a wooden block with a hook, a set of masses, a spring balance, and other necessary materials. The experiment involves recording the mass of the wooden block, placin…
See more
2011
State three properties of cathode rays which suggest the particle nature of matter
See more
2011
(a) Explain the terms:(i) transmutation as it relates to radioactivity; (ii) stopping potential.(b) \(^{23}_{11}A + ^2_1B\) > \(^p_qC\) + proton\(^p_qC\) > \(^r_sE\) + beta
A nucleus C, formed artificially from A a…
See more
2011
(a) Explain mutual induction(b) State four use of electromagnets The diagram above illustrates two coils X an arranged so that their axes are collinear. X is connected to an a.c. supply and has an amme in series with it…
See more
2011
(a)(i) What is an eclipse?(ii) List the three types of eclipse.(b) A student in a lecture theatre can read from the board clearly but requires a pair of spectacles to read from a book.(i) What eye defect has this student…
See more
2011
(a)(i) State two advantages of alcohol over mercury as a thermometric liquid.(ii) When the bulb of a thermometer is placed in a beaker of hot water, the level of the mercury first falls and then rises gradually. Explain…
See more
2011
(a) What is a vector quantity?(b) Three vectors 3 ms\(^{-1}\) N 45° W, 12 ms\(^{-1}\)W and 5 ms\(^{-1}\)S act at a point.(i) Sketch a vector diagram to illustrate the given information.(ii) Calculate the resultant of the…
See more
2011
The uncertainty in determining the duration during which an electron remains in a particular energy level before returning to the ground state is 2.0 x 10\(^{-9}\)s. Calculate the uncertainty in determining its energy at…