Assertion (A): When monochromatic light is incident on a glass slab and a triangular glass prism, the angle of deviation produced by the glass slab is zero, while the prism deviates the monochromatic light.
Reason (R): The two refracting surfaces of a rectangular glass block are parallel to each other, while the two refracting surfaces of a glass prism are inclined towards each other.
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A and r both are correct and R is not correct explaintion of A
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