Study Physics revision pack on Quantum Physics for A-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the ZIMSEC A-Level Physics revision pack. It is a free revision pack for revision.
7.2 QUANTUM PHYSICS P2, P3\&P5 QUESTIONS
Compiled by: R. Muza
Q1:NOV 2002 P2
7 (a) Give an expression for $E$, the energy of a photon in terms of $f$, its frequency, and $h$ the Planck constant.
$\_\_\_\_$
[1]
(b) Some of the energy levels of an atom of one substance are shown in Fig. 7.1 below.
\begin{table}
energy in | energy level
joules | $n$
$\times 10^{-19}$ |
$0.0 \quad \infty$ | 4
$-2.56-3$ | 3
$-5.92-2$ |
$-8.80-1$ |
\captionsetup{labelformat=empty}
\caption{Fig. 7.1}
\end{table}
(i) How much energy is required to raise an electron from $\mathrm{n}=1$ to $\mathrm{n}=4$.
\[
\text { energy }=
\]
[1]
- (ii) Calculate the wavelength of the radiation that is given off by the electron.
wavelength = $\_\_\_\_$
[2]
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