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AS 2 Waves, Photons and Medical Physics

Quick questions on Superposition and stationary waves: interference, diffraction and resonance - CCEA A-Level Physics

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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In a double-slit experiment the slit separation is 0.50 mm0.50\ \text{mm}, the screen is 2.0 m2.0\ \text{m} away and the fringe spacing is 2.4 mm2.4\ \text{mm}. Find the wavelength. [3 marks]
What is q2?
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State the path difference condition for constructive interference. [1 mark]
What is q3?
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A diffraction grating has 300300 lines per millimetre. Find the angle of the first-order maximum for light of wavelength 5.9×10−7 m5.9 \times 10^{-7}\ \text{m}. [3 marks]

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