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2 marksProperties of Waves

CAPE Physics Unit 1 · 2007 · Paper 2 · Question 7(a)(iv)

This question is about light waves and refraction.

State the relationship between the frequencies of the waves in the two media and the relationship between wavelengths in the two media.

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Other parts of this question

  1. 7(a)(i)Define the term 'refractive index' of a medium as it applies to light waves.[1 mark]
  2. 7(a)(ii)Draw a diagram showing the refraction of waves moving from one medium to another in which the velocity is slower.[2 marks]
  3. 7(a)(iii)Derive the law of refraction, n₁ sin θ₁ = n₂ sin θ₂, for waves moving from one medium to another.[3 marks]
  4. 7(b)(i)What is the speed of EACH of these colours of light in the glass?[6 marks]
  5. 7(b)(ii)A mixture of red and blue light is incident on the prism as shown in Figure 8. What is the angle between the two emergent rays?[6 marks]
  6. 7(c)A larger dispersion of the two colours of light may be produced by using a diffraction grating. What is the angle between rays of the two colours if a grating…[6 marks]

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