CAIE IGCSE Physics 3.1.9 Wavelength and Gap Size Affects Questions

Practise predicting and drawing diffraction from the wavelength-to-gap ratio, comparing semicircular spreading with nearly straight transmitted wavefronts.

Exam points

Distinguish scalars from vectors by direction and classify common physics quantities.

[Maximum number: 2]

Fig. 5.1 shows successive crests of a wave after a plane wave has passed through a gap.

Fig. 5.1

Fig. 5.2 shows a much wider gap. A plane wave of the same wavelength as in (b)(i) is incident on the gap from the left side of the barrier.

Fig. 5.2

On Fig. 5.2, draw three successive crests of the wave after the wave has passed through the gap.
[Total: 85

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CAIE IGCSE Physics 3.1.9 Wavelength and Gap Size Affects Questions question 1