Question 24
Question 24 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
7. Waves
7.1. Progressive waves

describe what is meant by wave motion as illustrated by vibration in ropes, springs and ripple tanks

8. Superposition
8.2. Diffraction

show an understanding of experiments that demonstrate diffraction including the qualitative effect of the gap width relative to the wavelength of the wave; for example diffraction of water waves in a ripple tank

8. Superposition
8.3. Interference

show an understanding of experiments that demonstrate two-source interference using water waves in a ripple tank, sound, light and microwaves