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3 marksRefraction

CSEC Physics · May/June 2010 · Paper 2 · Question 1(f)

The anti-reflective coating works best if its refractive index is the square root of the refractive index of the lens in the eye glasses. Determine the refractive index of the lens that gives the best result.

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Other parts of this question

  1. 1(a)Complete Table 1 by calculating the values for sin î and sin f.[4 marks]
  2. 1(b)Use the readings from the completed Table 1 to plot a graph of sin î against sin î on the graph paper on page 2.[7 marks]
  3. 1(c)Calculate the gradient of the graph.[4 marks]
  4. 1(d)State the TWO laws of refraction.[4 marks]
  5. 1(e)Calculate the angle of refraction if the angle of incidence is 90° for this new material.[3 marks]

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