Unpolarised light passes through a tourmaline crystal. The emergent light is analysed by j an analyser. When the analyser is rotated through 90°, the intensity of light:
A. remains uniformly bright
B. remains uniformly dark
C. varies between maximum and minimum
D. varies between maximum and zero.
Answer:D
Unpolarised light passes through a tourmaline crystal. The emergent light is analysed by j an analyser. When the analyser is rotated through 90°, the intensity of light:
A. remains uniformly bright B. remains uniformly dark C. varies between maximum and minimum D. varies between maximum and zero.