If you were standard on an island and only a plane mirror to signal an airplane

Question

If you were standard on an island and only a plane mirror to signal an airplane in hopes of being rescued, where would you point the mirror in relation to the sun to signal a searching plane? (assume that both the sun and the plane are in front of you and that the plane appears to be flying towards the sun) Suppose a mirror and three lettered cards are set up as in the figure below. If a person's eye is at point P, which of the lettered cards will be seen reflected in the mirror? Explain your answer using the law of reflection,

Explanation / Answer

Answer:

A and B will seem to be reflected because they make angle of incdence with normal and reflected ray can be collected at point P from the both

While letter C has incidence angle and reflcetd angle =0 i.e normal to mirror

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