A 1.
It is formed where the ends rays that bounced off, meet inside the mirror. Looking from outside it looks like light is coming out.
A2.
Either, (1) The light is blocked by a solid object
or
(2) The light is in such an angle that the light bounced off the mirror doesn't go into your eyes.
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> 1. Where is the focal point in a convex mirror?
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> 2. Light bounces off the surface of the mirror. But you can't see anything. How could that be?
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> To be answered by 3/31 after reading chap4.1(113~118p)