Bell asked in Science & MathematicsPhysics · 1 month ago

Light bulb & Plane Mirror?

There is a light bulb lit at a distance d in front of the center of a plane mirror of w=46 cm wide that hangs vertically on a wall. A person(persona) walks in front of the mirror along a line parallel to the mirror and is twice the distance (2D) where it is the bulb. The longest distance D that can walk and still see the image of the bulb in the mirror is:

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