Use this ZIMSEC A-Level Physics Paper 5 November 2009 marking scheme for checking answers, revision, and exam preparation in Zimbabwe.
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Questions: ZIMSEC A-Level Physics Paper 5 November 2009 Question Paper
This is the ZIMSEC A-Level Physics marking scheme for Paper 5 from November 2009. It shows how marks are awarded, so you can mark your own answers to the matching question paper. The paper code is 9188/5. See the question paper.
MARKING SCHEME! NOV 2009.
vee
101
$9188 / 5$
2
1
(a) (i) $\lambda=\frac{h}{p}$
$h=\lambda_{p}$ accept
Accept havel equabia
B1
(ii)
1.
\[
\begin{aligned}
\lambda=\frac{\mathrm{h}}{\mathrm{mv}} | =\frac{6.63 \times 10^{-34} 55^{5}}{50 \mathrm{~kg} \times 7.9 \mathrm{~ms}^{-1}} | =\quad 1.68 \times 10^{-36} \mathrm{~m}
\end{aligned}
\]
$\frac{\text { Mendur }}{\text { Momera }} C 1$
-
Cl
A1
BPAI
$\mathrm{Br}^{-1}$
2. No diffraction
Wavelength too small compared with the dimensions of aperture.
For diffraction pattern to be observed wavelength and aparture must be of same order.
B1 MI
3. Diffraction of electrons
B1
B1
B1
an evacuated tube
(b) (i)
1.
\[
\begin{array}{l}
\begin{array}{l}
\mathrm{n}=\frac{\mathrm{PV}}{\mathrm{RT}}=\frac{1.5 \times 10^{6} \times 0.8 \times 10^{-3}}{8.31 \times 320} \quad p V=N k T
\text { Number of molecules }=0.451 \times 6.02 \times 10^{23}
\quad=\quad 2.72 \times 10^{23}
\end{array}
\end{array}
\]
As:1
C1
GI
A1
(ii) Any two assumptions of the kinetic theory
B2
\[
\therefore \phi=\mathrm{BA} \text { terms explained } \approx B A \text { simes }
\]
magnetic flux density:
Magnetic force acting per unit current length
B1
(ii) Charge carriers moving in a magnetic field experience a force
B1
The force deflects them to one side B1