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Question

A point object is placed at the center of a glass sphere of radius 6 cm and refractive index 1.5. The distance of the virtual image from the surface of the sphere is

A
2 cm
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B
4 cm
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C
6 cm
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D
12 cm
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Solution

The correct option is C 6 cm

Using refraction formula 1μ21R=1μ2v1u
in given case, medium (1) is glass and (2) is air
So gμa1R=gμav1u11.516=11.5v16
11.56=1v+1.560.5v=1v+14
1v=11214=212=16v=6 cm.


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