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AB is small object dipped in the water at a depth d. Its length is l. It is seen from air at near normal incidence. The length of the image is?

AB is small object dipped in the water at a depth d. Its length is l. It is seen from air at near normal incidence. The length of the image is?

Question Image
Grade:12

2 Answers

Arun
25758 Points
4 years ago
Dear student
 

Let the length of image =l
Refractive index of water n2=1.33
Refractive index of air n1=1
l'=l(n2/n1)
=l(1.33/1)
l'=(1.33)l

Hence size in water will be 1.33 time more than original.
 
 
Regards
Arun (askIITians forum expert)
Michael Hoggs
18 Points
4 years ago
I thought the same thing but the answer given is l. If you are sure of your answer then probably the key is wrong

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