Department of Physics

Shun Lee Catholic Secondary School



S3 Physics

Teacher list

Useful Website

What’s more



In the past Physics was known as "Natural Philosophy".  Physics is understanding the natural world around us.  Physics involves understanding, not memorizing.  Physics is a predictive, numerical science which seeks to describe the world in terms of mathematical models. Mathematical model building is a powerful tool that has applications in many other realms of human activity from science and technology to the stock market. The skills acquired in taking a physics degree are applicable in many different careers.

The Fundamental Science

Physics is a very diverse subject. Physics is the study of the laws of nature that govern the behaviour of the universe, from the very smallest scales of sub-atomic particles to the very largest in cosmology. It applies these laws to the solution of practical problems and to the development of new technologies.

Physicists engage a broad range of skills to undertake this work. A physicist might be a theorist puzzling over fundamental laws, a numerical modeller developing sophisticated computer algorithms to calculate how systems behave, an experimentalist developing new techniques to measure properties of nature or an engineer combining those theories and techniques into new technologies. Physics is becoming increasingly interdisciplinary, as physicists work with mathematicians, engineers, chemists and biologists in order to understand and solve a wide range of problems confronting society.

Physics is a challenging and rewarding subject. Its study instructs a person in the art of critical thinking, how to pose questions and how to solve problems. Physics is at the heart of almost every facet of modern life.



Basically, the Physics Curriculum for HKDSE (HK Diploma of Education) is divided into compulsory and elective parts.

The compulsory part includes the topics “Heat and Gases”, Force and Motion”, “Wave Motion”, “Electricity and Magnetism” and “Radioactivity and Nuclear Energy”.

The  elective  part  includes “Astronomy  and  Space  Science”,  “Atomic  World”,  “Energy  and  Use  of  Energy”  and “Medical Physics”.  In SLCSS, we have chosen the electives “Atomic World”, “Energy and Use of Energy”, which are the most-commonly chosen topics, for our students.

For more details, you may access the latest Curriculum and Assessment Guide at HKEA website.


For HKDSE classes, we are using the textbooks published by Oxford University Press.

S3 Physics

To get high marks, you should always watch videos and
finish all check point questions before every lesson!

The following list of pre-lesson videos will be updated EVERY DAY 1 afternoon.

OPTICS (2015/2016 1st term)

·  Table of Contents  <Introduction (2:40)>

·  Lesson 1 – Light – An introduction <1.1 & 1.2 (7:44)> & <1.3 & 1.4 (5:11)>

·  Lesson 2Reflection <2.1, 2.2 (4:35)>, <Q17 EXPLAINED>

·  Lesson 3Reflection – <2.3, 2.4 & 2.5 (7:02)>, <Q18-28 EXPLAINED>

·  Lesson 4 – Refraction Part 1 - <3.1 & 3.2 (3:36)> <Q28-36 EXPLAINED>






·  Lesson 5 – Refraction – Part 1 <3.3, 3.4 & 3.5 (9:45)>, <Q37-43 EXPLAINED>

·  Lesson 6 – Refraction – Part 2 <4.1 & 4.2>, <Q44-49 EXPLAINED>

·  Lesson 7 – Refraction – Part 3 <>, <Q50-51 EXPLAINED>

·  Lesson 8 – Refraction – Part 3 <5.3 & 5.4>, <Q52,62-64 EXPLAINED, Q53-58 EXPLAINED>

·  Lesson 9 – Refraction – Part 3 <REVISION – Preparation for examination>


The examination in Dec 2015 will cover mainly Q1-64 except Q44, 48, 49 and 53-61.  Of course, there will also be questions from the notes (P.1-67) as well as the experimental worksheets. You will try the pre-exam question paper in the last lesson.


Pre-Exam Question Paper (Download NOW!!)



If you have lost your notes, you should << download Student Notes - OPTICS (pdf) here !   >>
Print your own copy and bring it back in the next lesson!


HEAT (2014/2015 2nd Term) - OBSOLETE

·  Lesson 1 - Temperature and thermometer 1.1-1.3 >> WATCH VIDEO <<

·  Lesson 2 - Temperature and thermometer 1.4-1.5 >> WATCH VIDEO <<

·  Lesson 3 - Temperature and thermometer 1.6-1.8 >> WATCH VIDEO <<

·  Lesson 4 - Internal Energy and Heat Transfer 2.1-2.4 >> WATCH VIDEO <<

·  Lesson 5 - Heat Capacity and Specific Heat Capacity 3.1 >> WATCH VIDEO <<

·  Lesson 6 - Heat Capacity and Specific Heat Capacity 3.2 >> WATCH VIDEO <<

·  Lesson 7 - Heat Capacity and Specific Heat Capacity 3.3 >> WATCH VIDEO <<

·  Lesson 8 - Heat Capacity and Specific Heat Capacity 3.4 (Mixing) >> WATCH VIDEO <<

·  Lesson 9 - Heat Capacity and Specific Heat Capacity 3.4-3.5>> WATCH VIDEO <<

·  Lesson 10 - Heat Transfer by Conduction 4.1-4.3 WATCH VIDEO > (Part 1) < and > (Part 2) <

·  Lesson 11- Revision and Preparation for exam

If you have lost your notes, you should << download Student Notes - HEAT (pdf) here !   >>
Print your own copy and bring it back in the next lesson!


Teacher List

Mr. Lui Chun Sau
Mr. Lam Pui Shing
Mr. Lai Kar Hei


This year teaching allocation (2015/2016) :  
S6 (E1, E2) : Mr. Lui
, Mr. Lai KH 
S5 (E1
, E2) : Mr. Lui CS, Mr. Lai KH 
S4 (Core-elective
, E2) : Mr. Lui CS, Mr. Lam PS  
S3A, 3B, 3C
, 3D : Mr. Lui CS, Lam PS


Useful Website


HKDSE@HKEA (HK Examination Authority)

Curriculum and Assessment Guide (HKEA)

Practice Papers (HKEA)

Sample Papers (HKEA)

List of data, formulae and relationships (HKEA)



SLCSS eClass
Please login and you may find the class <NSS Physics> if you are a member


HK Academy for Gifted Education



Tertiary Institutes

The University of Hong Kong – Department of Physics

Chinese University of Hong Kong – Department of Physics

Univeristy of Science and Technology – Department of Physics

Poly Univeristy of Hong Kong – Department of Applied Physicst

City University of Hong Kong - Department of Physics and Materials Science

Hong Kong Baptist University – Department of Physics

The Open University of Hong Kong – School of Science and Technology


Other Website

Online Java Simulation by Mr. CK Ng

Java Applets on Physics

Simple DC Circuit Applet (TRY 6.5 Elektrische schakelingen PhET)

Physics World

Contextual Physics


Khan Academy


Science Theater

Home Kitchen Nano Science

Astro Link


What' s more ?


There are some interesting physics questions that I want to share with you.


Topic: Mechanics


Topic: Mechanics


Topic: Mechanics


Topic: Wave (light)


Topic: Wave (light)


Topic: Wave (light)




Lastly, let’s see some daily applications of physics.


Topic: Mechanics


Topic: Wave (light)

Topic: Electricity

Topic: Wave


Shun Lee Catholic Secondary School
Department of Physics 201