A beam of unpolarised light passes through a tourmaline crystal A and then it passes through a second tourmaline crystal B oriented so that its principal plane is parallel to that of A. The intensity of emergent light is I_(0). Now B is rotated by 45^(@) about the ray. The emergent light will have intensity

A beam of unpolarised light passes through a tourmaline crystal A and

1.	A beam of unpolarised light passes through a tourmaline crystal A and then it passes through a second tourmaline crystal B oriented so that its principal plane is parallel to that of A. The intensity of emergent light is I_(0). Now B is rotated by 45^(@) about the ray. The emergent light will have intensity
Answer» `(I_(0))/(2)` `(I_(0))/(SQRT(2))` `I_(0)sqrt(2)` `2I_(0)` ANSWER :A

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