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Pearson Edexcel International GCSE (9–1) · PHYSICS · Section

Refraction

15 practice questions

Start practising (15 questions)

Practice questions

11–15 of 15

  1. Question 11

    1 mark · Normal

    Which statement best describes refraction of light?

    1. A.Light bounces off a surface at the same angle it strikes.
    2. B.Light passes through a boundary and bends due to a change in speed.
    3. C.Light is absorbed and converted to heat.
    4. D.Light travels without changing direction.
    Answer and check →

  2. Question 12

    2 marks · Normal

    Describe one example, other than light, where refraction occurs, and explain why refraction takes place.

    Answer and see the solution →

  3. Question 13

    4 marks · Normal

    A student shining a light ray into water measures the following angles for different boundaries:

    Angles measured by the student
    BoundaryAngle of IncidenceAngle of Refraction
    Air-water40°28°
    Water-glass30°22°
    (a)

    For the air-water boundary, is the light bending towards or away from the normal? Explain.

    [2 marks]
    (b)

    For the water-glass boundary, which medium is slower for light: water or glass? Justify your answer using the angles.

    [2 marks]
    Answer and see the solution →

  4. Question 14

    2 marks · Normal

    State two scientific devices that use the refraction of light and briefly describe how refraction is useful in each.

    Answer and see the solution →

  5. Question 15

    1 mark · Normal

    What is always true when a wave is reflected from a flat barrier?

    1. A.The wave changes speed when reflected.
    2. B.The wave is refracted at the barrier.
    3. C.The angle of incidence equals the angle of reflection.
    4. D.The wave leaves the surface at right angles.
    Answer and check →