Home > Subjects > Physics > Level 2 > 2.3 Waves > Key tips
- Subject: Physics
- AS: AS90254
- Level: 2
- Credits: 4
- External
Physics 2.3 Demonstrate understanding of wave phenomena
Key tips
- Understand that a physics problem involves a process(es) to find a physical quantity.
- Show all working of your calculations including any rearrangement of formulae.
- Be aware of the appropriate use of units. You may use both negative index (for example, m s–2) and slash notation (for example, m/s2) when writing units. However, the examination paper will supply data using negative index notation. Be aware that frequency of waves can be given as hertz (Hz) or s-1.
- Carefully label all diagrams.
- Always use arrows to show direction of light rays.
- Don’t round during calculations as this can result in a wrong answer, especially in trigonometry calculations.
- Your numerical answers should have the same number of significant figures as the data with the least number of significant figures.
- Don’t forget that you can use diagrams and words to answer “describe and explain� questions.
