Ans:
A) Plane polarised light: The light waves in which vibrations of the electric field vectors are confined only to one plane are called polarised light.
B) Plane of vibration: The plane in which the vibrations of polarised light take place is called as plane of vibration.
C) Plane of polarisation: The plane perpendicular to the plane of vibration in which there are no vibrations of polarised light is called as plane of polarisation.
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