Quick questions on Superposition and interference of waves (QCE Physics Unit 2)

3short 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 is q1?

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State the principle of superposition. [2 marks]

What is q2?

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Two speakers emit

1700 \text{ Hz}

tones in phase. Calculate the wavelength using

v = 340 \text{ m s}^{-1}

and the path-difference required for destructive interference. [3 marks]

What is q3?

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A QPAC two-speaker setup at

680 \text{ Hz}

(

v = 340 \text{ m s}^{-1}

) is placed

3.0 \text{ m}

apart. (a) Calculate the wavelength. (b) Determine the path-difference for the first constructive maximum off-axis.

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