Question

A plane mirrorrrrrrrr,circular shape, r = 20 cm is fixed to the ceiling. A bulb is to be placed on the axis of the mirrorrrrrrr. A circular area of radius R = 1 m on the floor is to be illuminated after reflection of light
from the mirror. The height of the room is 3m. What is maximum distance from the center of the mirror
and the bulb so that the required area is illuminated?

Answer 1

not u

Answer 2

here is my diagram..
http://i.imgur.com/Mgzudaj.png

Answer 3

m tired.. :-/.. ll do tomo ok :(

Answer 4

.....

Answer 5

@Mashy