focal lenth new!

Asked by chandni tiwari | 6th Mar, 2011, 05:29: PM

Expert Answer:

Dear student,
Focal length will decrease.Since the water is denser then air.Now we can use the relation
f1/f2=R.I of water/R.I air
20/f2=1.3/1 or

Answered by  | 7th Mar, 2011, 01:36: PM

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