Skip to content

Cambridge AS & A Level Physics

7.5Polarisation

Polarisation in Cambridge AS & A Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic21 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.5.1Associate polarisation with transverse waves.
  2. 7.5.2Use Malus's law for plane-polarised waves passing through one or more polarising filters.

Lessons

  • Polarisation and Malus's law

    35 min

    Full access

Join to read every lesson, or see what Full access includes.

Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Polarisation: sample question

1 mark

Plane-polarised light of intensity 40 W m−240\ \text{W m}^{-2} is incident on a polarising filter whose transmission axis is at 60∘60^\circ to the plane of polarisation. What is the transmitted intensity?

Choose one answer

Turn Polarisation into a strength.

Practise with instant marking, see your mastery grow and get a study plan built around your exam date.