please explain the answer in detail...
 

Asked by abinash.gupta003 | 22nd Dec, 2017, 01:39: PM

Expert Answer:

 
 
R1 is seen inside the mirror at the distance of 16 m from R. 
Therefore by Pythagoras theorem.
 
begin mathsize 20px style S R to the power of 1 space equals space square root of 16 squared plus 4 squared end root equals 16.49 space m

w h i c h space i s space m o r e space t h a n space 16 space m space

o p t i o n space d end style

Answered by Gajendra | 22nd Dec, 2017, 06:17: PM