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Question

Consider the situation shown in Fig. Water (μ=4/3) is filled in a beaker upto a height of 10 cm.
A plane mirror is fixed at a height of 5 cm from the surface of water. Distance of image from the mirror after reflection from it of an object O at the bottom of the beaker is
159217_60cbbed2d31945bb9906a74c71ccfa5e.png
  1. 15cm
  2. 12.5cm
  3. 7.5cm
  4. 10cm

A
12.5cm
B
15cm
C
10cm
D
7.5cm
Solution
Verified by Toppr

As seen from out side shift observed due to water is t×(11μ)=10×(134)=2.5

and for the mirror object distance is 5+102.5=12.5

Hence the image distance from mirror is 12.5, Hence option B is correct .

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