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Oscillations and Waves
Quick questions on Superposition and interference explained: H2 Physics Oscillations and Waves
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are path difference conditions?Show answer
For two coherent sources, the type of interference at a point depends on the path difference (the difference in distances travelled by the two waves):
What is the double-slit experiment?Show answer
Two slits a distance apart, illuminated by light of wavelength , produce fringes on a screen a distance away. The fringe separation is:
What is the diffraction grating?Show answer
A diffraction grating has many equally spaced slits a distance apart (the grating spacing). It produces sharp, bright maxima at angles given by:
What is q1?Show answer
State the principle of superposition. [1 mark]
What is q2?Show answer
In a double-slit experiment with slit separation , screen distance and wavelength , find the fringe separation. [2 marks]
What is q3?Show answer
Explain why a diffraction grating produces sharper maxima than a double slit. [2 marks]
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