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1 markWave Parameters

CSEC Physics · January 2014 · Paper 2 · Question 4(b)(i)b)

Electromagnetic waves of one wavelength are absorbed by a solar panel and waves of a longer wavelength are emitted. If electromagnetic waves of wavelength λ₁ = 2 × 10⁻⁷ m are absorbed by a solar panel as shown in Figure 3 and waves of wavelength λ₂ = 6.5 × 10⁻⁵ m are emitted, calculate

the decrease in frequency, Δf.

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Other parts of this question

  1. 4(a)(i)State TWO properties of electromagnetic waves.[2 marks]
  2. 4(a)(ii)Visible light is a type of electromagnetic wave. State TWO other types of electromagnetic waves indicating whether the wavelength of each is higher or lower…[4 marks]
  3. 4(b)(i)a)the frequency in each case[3 marks]
  4. 4(b)(ii)We assume that the useful energy transferred to the solar panel is a constant, k, times the decrease in frequency of the e.m. waves. (E = kΔf). State the…[1 mark]
  5. 4(b)(iii)With a change of conditions, the wavelength of the wave now absorbed by the panel increased to 6 × 10⁻⁷ m, but the emitted wavelength remains at λ₂ = 6.5 ×…[4 marks]

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