A point source of light B is placed at a distance L in front of the centre of a mirror of width d hung vertically on a wall. A man walks in front of the minor along a line parallel to the mirror at a distance $$2$$ L from it as shown. The greatest distance over which he can see the image of the light source in the mirror is

Question

Infinity Learn · Accepted Answer

According to the following ray diagram HI $$=$$ AB $$=$$ dand   $$DS=CD=d2$$∵$$Ah=2AD$$⇒$$GH=2CD=2d2=dsimilarly$$  $$IJ=d$$   so  $$GJ=GH+HI+IJ=d+d+d=3d$$

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material