Page 564 - SUBSEC October 2017_Neat

UNIT 2
MODULE 3: ATOMIC AND NUCLEAR PHYSICS (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

Particulate Nature of Electromagnetic Radiation (cont’d)

Students should be able to:

1.17. discuss interference and
diffraction as evidence of the
wave nature of
electromagnetic radiation;
and,

1.18. use the relation for the
de Broglie wavelength λ =
h/p to solve problems.

2. Atomic Structure

Students should be able to:

2.1. describe the (Geiger- Brief account of early
Marsden) α-particle theories of atomic
scattering experiment; structure, including those of
Thomson, Bohr and
Rutherford, should
introduce this section.
Interpretation of the results
of Geiger Marsden
experiment.

2.2. discuss the evidence the Large relative atomic
(Geiger-Marsden) α-particle volume compared to
scattering experiment nucleus, positive charge on
provides for the nuclear nucleus, mass of nucleus is
model of the atom; approximately mass of
atom.

2.3. describe Millikan’s oil drop Include details of Millikan’s
experiment; and, experimental design.
Mention Stoke’s law.

2.4. discuss the evidence in Include interpretation of The experiment includes
Millikan’s oil drop graphical representation of results for terminal velocity
experiment for the results. calculations, size of a drop.
quantisation of charge.

CXC A16/U2/17 64