Page 561 - SUBSEC October 2017_Neat

UNIT 2
MODULE 3: ATOMIC AND NUCLEAR PHYSICS

GENERAL OBJECTIVES

On completion of this Module, students should:

1. appreciate the photon model for electromagnetic radiation;

2. understand the development of the nuclear model of the atom;

3. appreciate the wave-particle nature of matter and energy;

4. understand the relationship between mass and energy;

5. demonstrate a knowledge of radioactivity and its applications; and,

6. apply the laws of Physics to solve appropriate problems.

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

1. Particulate Nature of Electromagnetic Radiation

Students should be able to:

1.1. describe the phenomenon of A description of what Measuring current and or
photoelectric emission; happens when uv radiation change in resistance in
falls on a zinc plate, or light devices exposed to light
on materials such as such as photocells.
cadmium sulfide and
photovoltaic cells.

1.2. use the relationship E = h f to
solve problems;

1.3. discuss the shortcomings of Mention effect of high and
classical physics to explain low intensity below and
aspects of the photoelectric above the cutoff frequency.
effect;

1.4. explain how the photon Explanation of the
theory better suits the photoelectric effect as
emission of a photon; evidence for the particulate
nature of electromagnetic
radiation.

CXC A16/U2/17 61