Q.
A hemispherical glass body of radius 10cm and refractive index 1.5 is silvered on its curved surface. A small air bubble is 6cm below the flat surface inside it along the axis. The position of the image of the air bubble made by the mirror is seen:
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a
14 cm below flat surface
b
20 cm below flat surface
c
16 cm below flat surface
d
30 cm below flat surface
answer is B.
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Detailed Solution
Given, radius of hemisphere glass R=10cm
Focal length
By using mirror formula
Apparent height, =20cm
Below flat surface
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