A container is filled with water upto a height of 33.25cm.A concave mirror is placed 15cm above the water level and the image of an object placed at the bottom is formed 25cm below the water level.Find the focal length of the concave mirror.

Asked by Shreyansh Upadhyay | 29th Apr, 2013, 06:19: PM

Expert Answer:

The system is shown horizontally.
O' & I' are the apparent depth of object ie the bottom of the water and image of it.
 
mu=RD/AD
Find apparent oject distance and apparent image distance first and then put them in the mirror formula to find the focal lngth of the mirror.

Answered by  | 7th May, 2013, 12:30: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.