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Solve the Previous Problem If the Paperweight is Inverted at Its Place So that the Spherical Surface Touches the Paper. - Physics


Solve the previous problem if the paperweight is inverted at its place so that the spherical surface touches the paper.

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Taking the radius of the paperweight as its thickness = 3 cm
Refractive index of the paperweight (μg) = 3/2
Refractive index of the air (μ1) = 1

Image shift is given by: 

\[∆ t = \left( 1 - \frac{1}{\mu} \right)t\] 

\[ = \left( 1 - \frac{2}{3} \right)3\] 

\[ = \left( \frac{1}{3} \right)3\] 

\[   =   1  \text{ cm }\]
The upper surface of the paperweight is flat and the spherical spherical surface is in contact with the printed letter.
Therefore, we will take it as a simple refraction problem.

Hence, the image will appear 1 cm above point A.

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HC Verma Class 11, 12 Concepts of Physics 1
Chapter 18 Geometrical Optics
Q 45 | Page 415
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