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Area 2: Particles and Waves

Quick questions on Wave-particle duality and the photoelectric effect - SQA Higher 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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Calculate the energy of a photon of frequency 5.0×1014 Hz5.0 \times 10^{14}\ \text{Hz}. Take h=6.63×10−34 J sh = 6.63 \times 10^{-34}\ \text{J s}. [2 marks]
What is q2?
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State what is meant by the work function of a metal. [1 mark]
What is q3?
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A metal has a work function of 3.0×10−19 J3.0 \times 10^{-19}\ \text{J}. A photon of energy 5.0×10−19 J5.0 \times 10^{-19}\ \text{J} strikes it. Calculate the maximum kinetic energy of the ejected electron.

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