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4.A ray of light is incident normally to the surface of a glass slab placed in air give angle of incidence and angle of refraction in this case.I will branist |
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Answer» The ray of light which is INCIDENT NORMALLY on a plane glass slab passes undeviated. That is such a ray SUFFERS no bending at the surface because here the angle of incidence is 0°. THUS if angle of incidence ∠i= 0°, then the angle of REFRACTION ∠r = 0°.Explanation:Mark me as the brainliest.. |
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