ZIMSEC A-Level Physics Paper 5 November 2011 Question Paper

About this question paper

This is the ZIMSEC A-Level Physics question paper for Paper 5 from November 2011. Use it for exam practice under timed conditions, then check your work against the marking scheme. The paper code is 9188/5. See the marking scheme.

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Text from the first page

8

4 (a) Millikan's oil drop experiment was a major success in the determination of the electron charge.
(i) State the evidence provided by the results of this experiment.
(ii) Briefly describe the principles involved in the determination of the electronic charge by Millikan's experiment.
(iii) To improve accuracy in the experiment, Millikan used a heat jacket and a less volatile oil.

Explain how each of these improved the accuracy of the results.
(iv) A student investigating the magnitude of the electronic charge, based on non-S.I units, obtained the following data of charge on oil drops:
\[
\begin{array}{l}
26.08 ; 22.82 ; 9.77 ; 26.08 ; 16.30 ; 22.82 ; 19.56 ; 9.78 ; 16.30 ; 26.08 ; 9.78 ;
16.30 ; 19.56 ; 9.79
\end{array}
\]

Use these results to determine the charge on an electron according to the student.

[10]
(b) Fig. 4.1 shows a simplified form of a mass spectrometer.

Fig. 4.1

9188/5 N2011