Q: What is the angle of incidence when a ray of light is refracted at an angle of 30 degrees?  

Answer: A

Answer: A) 30 degrees

Explanation: The angle of incidence is equal to the angle of refraction when light passes from one medium to another medium of the same refractive index. Since the ray of light is refracted at an angle of 30 degrees, the angle of incidence is also 30 degrees.

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