Pre-lab 9
Lab Meeting Time:						Name:

	1. What is a polariser ?					     (2)





	2. How many polarizers do you use in
	   i. Part 1		ii. Part 2 ??				     (2)






	3. Using a digram, show which of the polrizers is to be rotated to
	   get measure the angle    ?(for both the parts.)		     (3)





















	4. Write the intensity I as a function of the angle    .
	   (For both the parts.)					     (3)