Question

b) Calculate the angle of incidence when the incident ray makes an angle of 70° with
the reflected ray.
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Answer 1

Answer:

According to the law of reversibility light retraces its path..we also know that the angle of incidence in a plane mirror is equal to the angle of reflection

so we can say that

the angle of incidence=angle of reflection

angle of incidence=70°

so angle of reflection=70°