Q. H-polaroid is prepared by
A) Orienting herapathite crystal in the same direction in nitrocellulose
B) Using thin tourmaline crystals
C) Stretching polyvinyl alcohol and then heated with dehydration agent
D) Stretching polyvinyl alcohol and then impregnation with iodine
Explanation
(d) When a thin sheet of polyvinyl alcohol is stretched and then impregnating with iodine, H-polaroid is obtained.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.