A point source of light P is placed at a distance L in front of a mirror of widthd hung vertically on a wall . A man walks infront of the mirror a long a line parallel to the mirror at a distance 2L as shown in the figure. The greatest distance over which he can see the imageof the light source, in the mirror is

A point source of light P is placed at a distance L in front of a mirr

1.	A point source of light P is placed at a distance L in front of a mirror of widthd hung vertically on a wall . A man walks infront of the mirror a long a line parallel to the mirror at a distance 2L as shown in the figure. The greatest distance over which he can see the imageof the light source, in the mirror is
Answer» Solution : Locate the position of image and by the help of shortcut method of locating field of view JOIN the mirror through lines, and that region is the field of view then, by similar TRIANGLE concept the TRIANGLES IPQ and IMN are similar, `(PQ)/(MN)=(3L)/L implies PQ=3d`