Question

Glass plate of refractive index 1.732 is to be used as a polariser it's polarising angle is ...
A) 30°
B)45°
C)60°
D)90°

Answer 1

hope it was helpful dear

Answer 2

(c)60degree 
by using formulae tanip=1.73
tanip=√3
ip=60degree 
ip=polarising angle  
tan√3=60 degree