David Sang and Graham Jones Solutions for Chapter: Waves, Exercise 9: Questions

Explain what happens to unpolarised light incident at a Polaroid.

Plane polarised light of intensity $12{\mathrm{Wm}}^{-2}$ is incident at a Polaroid.

Calculate the intensity of the transmitted light when the angle between the plane of polarisation of the incident light and the transmission axis of the Polaroid is

(a) $45°$

Plane polarised light of intensity $12{\mathrm{Wm}}^{-2}$ is incident at a Polaroid.

Calculate the intensity of the transmitted light when the angle between the plane of polarisation of the incident light and the transmission axis of the Polaroid is

(b) $60°$.

Plane polarised light is incident at a Polaroid. Calculate the angle $\theta$, which gives transmitted light of intensity $30\%$ that of the incident intensity of light.