Page 563 - 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:

1.10. solve problems by using the μ = linear absorption co- Measuring attenuation of
equation I = I exp (-μ×) for efficient. light through of layers of
0
the attenuation of light filters unto the
X-rays in matter; photocell using a
multimeter.

1.11. discuss the use of X-rays in Qualitative description of
radiotherapy and imaging in the operation of a CAT
medicine; scanner should be included
here.

1.12. discuss how line spectra
provide evidence for discrete
energy levels in isolated
atoms;

1.13. use the relationship An understanding of the
hf = E2 - E1 to solve problems; existence of discrete
electron energy
levels in isolated atoms (for
example, atomic hydrogen)
and deduction of how
this leads to spectral lines.

1.14. distinguish between Include absence/presence
absorption and emission of emission of band of
line spectra; frequencies.

1.15. explain the wave-particle Mention Quantum Physics.
nature of matter;

1.16. describe the evidence
provided by electron
diffraction for the wave
nature of particles;

CXC A16/U2/17 63