Review Conceptual Example 1 as an aid in understanding this problem. The drawing

Question

Review Conceptual Example 1 as an aid in understanding this problem. The drawings show two arrows, A and B, that are located in front of a plane mirror. A person at point Pis viewing the image of each arrow. Which images can be seen in their entirety? Determine your answers by drawing a ray from the head and foot of each arrow that reflects from the mirror according to the law of reflection and reaches point P. Only if both rays reach point P after reflection can the image of that arrow be seen in its entirety. (Select all that apply.)

image of A

image of B

neither image

Explanation / Answer

as from the given we can see that the two arrows,A and B are located in front of a planemirror,

   and a person at point P is viewing theimage of each arrows

   as discussed in first example lightemanating from the arrow is reflected from the mirror and is

   reflected toward the observer atP. In order for the observer to see the arrow in itsentirety, both

   rays, the one from the top of the arrow and theone from the bottom of the arrow, must pass

   through the point P

   tccording to the law of reflection, all rayswill be reflected so that the angle of reflection is equal

   to the angle of incidence

   the ray from the top of arrow A strikesthe mirror and reflects so that it passes through pointP

   likewise, the ray from the bottom of the arrow isreflected such that it too passes through point
P the observer at P .

   in the similar manner theray from the top of arrow B passes through pointP

   however,the ray from the bottom of the arrow doesnot pass through P

   so the observer does not see that arrow atB

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