a student traces the path of a ray of light through a triangular glass prism for different values of the angle of incidence. on analysing the ray diagrams, which one of the following conclusions is he likely o draw? A) the emergent ray is parallel to the incident ray. B) the emergent ray bends at an angle to the direction of the incident ray. C)the emergent ray and the refracted ray are at right angles to each other. D)the emergent ray is perpendicular to the incident ray.
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The emergent ray bends at an angle to the direction of the incident ray
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Answer:
the answer is b)
Explanation:
It can't be A as the emergent ray forms the angle of deviation with incident ray when extended backwards.
It can't be D as the angle of deviation is not always 90°.
It can't be C as the normal is different.
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