define angle of deviation of the prism
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The angle of deviation through a triangular prism is defined as the angle between the incident ray and the emerging ray (angle δ). It can be shown that when the angle of. incidence i is equal to the angle of refraction r' for the emerging ray, the angle of deviation is at a minimum.
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Answer:
IT IS ANGLE FORMED BETWEEN ORIGINAL PATH TO THE DEVIATED PATH OF THE LIGHT RAY IN A PRISM.
IT IS INVERSELY PROPORTIONAL TO THE WAVELENGTH OF THE RAY OF LIGHT.
THANK YOU !!!!!
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