Wave interactions

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Question 16

Medium

Unpolarised light of intensity $I_0\,$ is incident on a series of three ideal polarising filters as shown.

A series of three polarizing filters. Filter 1 has a vertical axis, Filter 2 has an axis at 45 degrees to the vertical, and Filter 3 has a horizontal axis. Point P is after Filter 2 and before Filter 3. Point Q is after Filter 3.

Which row in the table below correctly identifies the intensity of the light at position $P\,$ and position $Q$ ?

	Intensity at $P$	Intensity at $Q$
A	$0.250\,I_0$	Zero
B	$0.500\,I_0$	$0.250\,I_0$
C	$0.250\,I_0$	$0.125\,I_0$
D	$0.500\,I_0$	Zero

Intensity at $P$ : $0.250\,I_0$ , Intensity at $Q$ : Zero

Intensity at $P$ : $0.500\,I_0$ , Intensity at $Q$ : $0.250\,I_0$

Intensity at $P$ : $0.250\,I_0$ , Intensity at $Q$ : $0.125\,I_0$

Intensity at $P$ : $0.500\,I_0$ , Intensity at $Q$ : Zero

Wave interactions

Question 16

Wave interactions Questions

Wave interactions

Question 16

Wave interactions Questions