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
f2=20/1.3=15.38cm
 

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

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