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Progressive and stationary waves

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Question 3

A photodetector measures the intensity of light from two different sources, S1S_1S1​ and S2S_2S2​.

A polarising filter is placed between source S1S_1S1​ and the detector. When the filter is rotated through a small angle, the detected intensity of light from S1S_1S1​ decreases.

When the same filter is placed between source S2S_2S2​ and the detector and rotated through any angle, the detected intensity remains constant.

Which row in the table correctly identifies the polarization state of the light waves from S1S_1S1​ and S2S_2S2​?

A

Light waves from S1S_1S1​: polarised | Light waves from S2S_2S2​: unpolarised

B

Light waves from S1S_1S1​: unpolarised | Light waves from S2S_2S2​: polarised

C

Light waves from S1S_1S1​: polarised | Light waves from S2S_2S2​: polarised

D

Light waves from S1S_1S1​: unpolarised | Light waves from S2S_2S2​: unpolarised

Markscheme

Progressive and stationary waves Questions

  1. A Level
  2. /Physics
  3. /Progressive and stationary waves

25 exam-style questions on AQA A Level Physics Progressive and stationary waves, covering Progressive waves, Longitudinal and transverse waves, and Principle of superposition of waves and formation of stationary waves. Each one has a worked solution and a mark scheme showing where the marks go.

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